Question

7×(а+в)+2×(а-5в)========

Answer 1

7а+7в+2а-10в = 9а-3в = 3 ( 3а-в)

Answer 2

It seems like you've provided a mathematical expression:

7*(a+b) + 2*(a-5b)

To simplify this expression, you can use the distributive property (also known as the distributive law or the distributive property of multiplication over addition) to combine like terms.

Let's break it down step by step:

1. Distribute the constants (7 and 2) across the terms in the parentheses:

   7*(a+b) = 7a + 7b 2*(a-5b) = 2a - 10b

2. Now add the simplified expressions together:

   7a + 7b + 2a - 10b

3. Combine the like terms (terms with the same variable):

   (7a + 2a) + (7b - 10b) 9a - 3b

So, the simplified expression is:

9a - 3b