Question

Упростите выражение: 1) 2y+(7y-3x) 2) 17b-(15a+7b) 3) 11a-(18a-4b) 4) 10(3x-7y)+12x 5) (20y+4x)-(12x-5y) 6) 6(2x-3y)-3(4x+6y)

Answer 1

1)2у+7у-3х=9у-3х
2)17b-15a-7b=10b-15a
3)11a-18a+4b=-7a+4b
4)30x-70y+12x=42x-70y
5)20y+4x-12x+5y=25y-8x
6)12x-18y-12x-18y=-36y

Answer 2

Давайте упростим каждое из выражений:

1. 2y + (7y - 3x) = 2y + 7y - 3x = 9y - 3x

2. 17b - (15a + 7b) = 17b - 15a - 7b = 10b - 15a

3. 11a - (18a - 4b) = 11a - 18a + 4b = -7a + 4b

4. 10(3x - 7y) + 12x = 30x - 70y + 12x = 42x - 70y

5. (20y + 4x) - (12x - 5y) = 20y + 4x - 12x + 5y = 9y - 8x

6. 6(2x - 3y) - 3(4x + 6y) = 12x - 18y - 12x - 18y = -36y