Question

2.Вычислите, применяя законы сложения: а)49+((-49)+22= б)-12+(12+(-29))= в)(47+(-58))+(-47)= г)(124+59)+(-24)= д)-56+17+(-27)= е)49+(-72)+62= ж)36+(-51)+14= з)-48+(-19)+28= Можно пожалуйста не просто ответы ,а то как решали или 1 пример решить с объяснением

Answer 1

а) 49 + ((-49) + 22)

To solve this expression, we can start by simplifying the innermost parentheses first. The expression inside the parentheses is (-49) + 22, which equals -27.

Now we can substitute the simplified expression back into the original equation: 49 + (-27).

To add a positive number and a negative number, we can think of it as subtracting the absolute value of the negative number from the positive number. In this case, we have 49 - 27, which equals 22.

б) -12 + (12 + (-29))

Similar to the previous example, we can simplify the expression inside the parentheses first. The expression inside the parentheses is 12 + (-29), which equals -17.

Now we can substitute the simplified expression back into the original equation: -12 + (-17).

To add two negative numbers, we simply add their absolute values and keep the negative sign. In this case, we have -12 + (-17), which equals -29.

в) (47 + (-58)) + (-47)

Again, let's simplify the expression inside the first set of parentheses first. The expression inside the parentheses is 47 + (-58), which equals -11.

Now we can substitute the simplified expression back into the original equation: -11 + (-47).

To add two negative numbers, we simply add their absolute values and keep the negative sign. In this case, we have -11 + (-47), which equals -58.

г) (124 + 59) + (-24)

Let's simplify the expression inside the first set of parentheses first. The expression inside the parentheses is 124 + 59, which equals 183.

Now we can substitute the simplified expression back into the original equation: 183 + (-24).

To add a positive number and a negative number, we can think of it as subtracting the absolute value of the negative number from the positive number. In this case, we have 183 - 24, which equals 159.

д) -56 + 17 + (-27)

To solve this expression, we can start by adding the first two numbers: -56 + 17 equals -39.

Now we can substitute the simplified expression back into the original equation: -39 + (-27).

To add two negative numbers, we simply add their absolute values and keep the negative sign. In this case, we have -39 + (-27), which equals -66.

е) 49 + (-72) + 62

To solve this expression, we can start by adding the first two numbers: 49 + (-72) equals -23.

Now we can substitute the simplified expression back into the original equation: -23 + 62.

To add a positive number and a negative number, we can think of it as subtracting the absolute value of the negative number from the positive number. In this case, we have -23 + 62, which equals 39.

ж) 36 + (-51) + 14

To solve this expression, we can start by adding the first two numbers: 36 + (-51) equals -15.

Now we can substitute the simplified expression back into the original equation: -15 + 14.

To add a positive number and a negative number, we can think of it as subtracting the absolute value of the negative number from the positive number. In this case, we have -15 + 14, which equals -1.

з) -48 + (-19) + 28

To solve this expression, we can start by adding the first two numbers: -48 + (-19) equals -67.

Now we can substitute the simplified expression back into the original equation: -67 + 28.

To add a negative number and a positive number, we can think of it as subtracting the absolute value of the positive number from the negative number. In this case, we have -67 + 28, which equals -39.

I hope this helps! Let me know if you have any further questions.