Question

Упростить1) (6а - b) - (2a + 3 b)
2) 7x + 3y - (-3x + 3y)
3) 8x - (3x - 2y) - 5y

Answer 1

Объяснение:

1) (6a - b) - (2a + 3b)  = 6a -b -2a-3b = 6a-2a-b-3b = 4a-4b = 4(a-b)

2) 7x + 3y - (-3x + 3y)  = 7x+3y+3x-3y = 10x

3) 8x - (3x - 2y) - 5y = 8x-3x+2y-5y = 5x-3y