Question

-2.8x (-5y) -12a-25b+18a+14b -7 (m-4)+5 (m+2)

Answer 1

Ответ:

1)-2,8x(-5y)=14xy

2)-12a-25b+18a+14b=6a-11b

3)-7(m-4)+5(m+2)=-7m+28+5m+10=-2m+38

Answer 2

Let's simplify the expression step by step:

-2.8x(-5y) - 12a - 25b + 18a + 14b - 7(m - 4) + 5(m + 2)

First, distribute the constants:

-2.8x(-5y) = 14xy -7(m - 4) = -7m + 28 5(m + 2) = 5m + 10

Now, reorganize the terms:

14xy - 7m + 28 + 5m + 10 - 12a + 18a - 25b + 14b

Combine like terms:

(14xy) + (-7m + 5m) + (28 + 10) + (-12a + 18a) + (-25b + 14b)

14xy - 2m + 38 + 6a - 11b

So, the simplified expression is:

14xy - 2m + 38 + 6a - 11b