Question

№1 1) -2+(-4) 2) -0,37+(-0,94) 3) -4,72+(-0,8) 4) -3 6/11+(-5 7/11) 5) -7/9+(-11/15) №2 1)-14+8 2)-2,7+6,4 3)7,23+(-18,4) 4)-5/6+7/8 5)-6 2/9+2 5/6 /-если что это дробная черта например: 4/4 это четыре четвёртых или же 2 5/7 это две целые пять седьмых думаю вы поняли

Answer 1

Ответ:

Пошаговое объяснение:

1) -2 + (-4) = -2 - 4 = -6

2) -0,37 + (-0,94) = -0,37 - 0,94 = -1,31

3) -4,72 + (-0,8) = -4,72 - 0,8 = -5,52

4) -3. 6/11 + (-5. 7/11) = -3. 6/11 - 5. 7/11 = -8. 13/11 = -9. 2/11

5) -7/9 + (-11/15) = -7/9 - 11/15 = -35/45 - 33/45 = -68/45 = -1. 23/45

1) -14 + 8 = -6

2) -2,7 + 6,4 = 3,7

3) 7,23 + (-18,4) = 7,23 - 18,4 = -11,17

4) -5/6 + 7/8 = -20/24 + 21/24 = 1/24

5) -6. 2/9 + 2. 5/6 = -6. 4/18 + 2. 15/18 = -5. 22/18 + 2. 15/18 = -3. 7/18

Answer 2

№1

1) -2 + (-4) 2) -0,37 + (-0,94) 3) -4,72 + (-0,8) 4) -3 + 6/11 + (-5 + 7/11) 5) -7/9 + (-11/15)

Let's solve these one by one.

1) -2 + (-4) The sum of two negative numbers is negative. Therefore, -2 + (-4) = -6.

2) -0,37 + (-0,94) The sum of two negative numbers is negative. Therefore, -0,37 + (-0,94) = -1,31.

3) -4,72 + (-0,8) The sum of two negative numbers is negative. Therefore, -4,72 + (-0,8) = -5,52.

4) -3 + 6/11 + (-5 + 7/11) First, add the whole numbers: -3 + (-5) = -8. Then, add the fractions: 6/11 + 7/11 = 13/11. Finally, combine the whole number and the fraction: -8 + 13/11 = -8 + 1 2/11 = -9 2/11.

5) -7/9 + (-11/15) To add these fractions, we need to find a common denominator, which is 45. -7/9 = -35/45 and -11/15 = -33/45. Therefore, -7/9 + (-11/15) = -35/45 + (-33/45) = -68/45.

№2

1) -14 + 8 2) -2,7 + 6,4 3) 7,23 + (-18,4) 4) -5/6 + 7/8 5) -6 + 2/9 + 5/6

Let's solve these one by one.

1) -14 + 8 The sum of a negative and a positive number is found by subtracting their absolute values and keeping the sign of the number with the greater absolute value. Therefore, -14 + 8 = -6.

2) -2,7 + 6,4 The sum of a negative and a positive number is found by subtracting their absolute values and keeping the sign of the number with the greater absolute value. Therefore, -2,7 + 6,4 = 3,7.

3) 7,23 + (-18,4) The sum of a positive and a negative number is found by subtracting their absolute values and keeping the sign of the number with the greater absolute value. Therefore, 7,23 + (-18,4) = -11,17.

4) -5/6 + 7/8 To add these fractions, we need to find a common denominator, which is 24. -5/6 = -20/24 and 7/8 = 21/24. Therefore, -5/6 + 7/8 = -20/24 + 21/24 = 1/24.

5) -6 + 2/9 + 5/6 First, add the whole numbers: -6 + 0 = -6. Then, add the fractions: 2/9 + 5/6. To add these fractions, we need to find a common denominator, which is 18. 2/9 = 4/18 and 5/6 = 15/18. Therefore, 2/9 + 5/6 = 4/18 + 15/18 = 19/18 = 1 1/18. Finally, combine the whole number and the fraction: -6 + 1 1/18 = -6 + 1 1/18 = -4 17/18.

I hope this helps! If you have any more questions, feel free to ask.