Question

62+(-20)= -74+73= -17+(-9)= 32+(-82)=18+17= -30+(-45)=-13+15= 0,42+(-2,5)=0,35+(-1,61)= 2,5+(-0,75)=-3,12+(-4,8)= 3,2+(-10)8+(-15)=45+(-50)=​

Answer 1

Ответ:

62+(-20)=42

-74+73=-1

-17+(-9)= -26

32+(-82)=-50

18+17= -35

-30+(-45)=-75

-13+15=-3

0,42+(-2,5)=-2.08

0,35+(-1,61)=-1.26

2,5+(-0,75)=1.75

-3,12+(-4,8)=-7.92

3,2+(-10)=-6.8

8+(-15)=-7

45+(-50)=-5

Answer 2

Ответ:

42=-1

-26=-50

35=-15

2=-2,08

-1,26=2,425

-7,92=-6,8

-7

-5

Answer 3

Let's solve each of these arithmetic equations step by step:

1. 62 + (-20) = 42

Explanation: Adding a negative number is the same as subtracting that number. So, 62 + (-20) becomes 62 - 20, which equals 42.

2. -74 + 73 = -1

Explanation: Adding a positive number to a negative number is the same as subtracting the absolute value of the negative number from the positive number. So, -74 + 73 is equivalent to 73 - 74, which results in -1.

3. -17 + (-9) = -26

Explanation: When adding two negative numbers, you simply add their absolute values and keep the negative sign. So, -17 + (-9) is equal to -26.

4. 32 + (-82) = -50

Explanation: Similar to the previous case, when adding a positive number and a negative number, you subtract the absolute value of the negative number from the positive number. Thus, 32 + (-82) becomes 32 - 82, resulting in -50.

5. 18 + 17 = 35

Explanation: Here, you're adding two positive numbers, so you add them together to get the sum. Hence, 18 + 17 equals 35.

6. -30 + (-45) = -75

Explanation: Adding two negative numbers follows the same rule as explained earlier. Thus, -30 + (-45) is equal to -75.

7. -13 + 15 = 2

Explanation: Adding a negative number and a positive number is similar to subtracting the absolute value of the negative number from the positive number. So, -13 + 15 becomes 15 - 13, which equals 2.

8. 0.42 + (-2.5) = -2.08

Explanation: Adding a positive number and a negative number in decimal form is done in the same way as with whole numbers. Thus, 0.42 + (-2.5) equals -2.08.

9. 0.35 + (-1.61) = -1.26

Explanation: Following the same rules as in the previous case, 0.35 + (-1.61) is equal to -1.26.

10. 2.5 + (-0.75) = 1.75

Explanation: Adding a positive number and a negative number in decimal form is similar to subtracting the absolute value of the negative number from the positive number. So, 2.5 + (-0.75) becomes 2.5 - 0.75, which equals 1.75.

11. -3.12 + (-4.8) = -7.92

Explanation: Adding two negative numbers in decimal form follows the same rule as with whole numbers. Hence, -3.12 + (-4.8) equals -7.92.

12. 3.2 + (-10) + (-15) = -21.8

Explanation: You add all the numbers together. Thus, 3.2 + (-10) + (-15) equals -21.8.

13. 45 + (-50) = -5

Explanation: Adding a positive number and a negative number is the same as subtracting the absolute value of the negative number from the positive number. Therefore, 45 + (-50) becomes 45 - 50, which equals -5.