Question

1) (-12,8+5,9)×(-2,3-2,7) 2)-2(7-2х)=-7,6

Answer 1

Ответ:

Вот решение:

1.(12,8+5,9)(-2,3-2,7)=29,44+34,56+13,57-15,93=34,5

2.-2(7-2x)=-7,6

-14+4x=-7,6

4x=14-7,6

x=6,4:4

x=1,6

Объяснение:

Если не слишком поздно, то держи

Answer 2

Sure, I can help you with these calculations.

1. Let's calculate the expression (-12.8 + 5.9) * (-2.3 - 2.7):

First, perform the calculations inside the parentheses: -12.8 + 5.9 = -6.9 -2.3 - 2.7 = -5.0

Now multiply these results together: (-6.9) * (-5.0) = 34.5

So, the result of the expression (-12.8 + 5.9) * (-2.3 - 2.7) is 34.5.

2. Solve the equation -2(7 - 2x) = -7.6 for x:

Distribute the -2 on the left side of the equation: -14 + 4x = -7.6

Now, isolate x by adding 14 to both sides of the equation: 4x = 6.4

Finally, divide both sides by 4 to solve for x: x = 6.4 / 4 x = 1.6

So, the solution for the equation -2(7 - 2x) = -7.6 is x = 1.6.