Question

раскрыть скобки: -9(a-4) -7(b+5)

Answer 1

-9а+63-7b-35=-9a-7b+28

Answer 2

I can help you with math problems and more. To expand the brackets, you need to multiply each term inside the brackets by the coefficient outside the brackets. For example, -9(a-4) = -9a + 36. Here is the detailed solution:

$$ \begin{aligned} -9(a-4) - 7(b+5) &= -9a + 36 - 7b - 35 \\ &= -9a - 7b + 1 \end{aligned} $$

The final answer is -9a - 7b + 1. I hope this helps.Ответь+подробно.+раскрыть+скобки:+-9(a-4)+-7(b+5)