Question

3(x-5)-7(x+1) 2(x-y)+(2x-3y)

Answer 1

1) 3(х-5)-7(x-1)=3x-15-7x+7=-4x-8

2) 2(x-y)+2(2x-3y)=2x-2y+4x-6y=6x-8y

Answer 2

Let's simplify the given expressions:

1. 3(x - 5) - 7(x + 1) = 3x - 15 - 7x - 7 = (3x - 7x) + (-15 - 7) = -4x - 22

2. 2(x - y) + (2x - 3y) = 2x - 2y + 2x - 3y = (2x + 2x) + (-2y - 3y) = 4x - 5y

Therefore, the simplified forms of the given expressions are:

1. -4x - 22
2. 4x - 5y