Question

Упростите выражение : a) 3a-7b-6a+8b б)3(4x+2)-6 в)2(2y-1)-3(3y+2)

Answer 1

А) 3а-7b-6a+8b=b-3a
б)3(4x+2)-6=12x+6-6=12x
в)2(2y-1)-3(3y+2)=4у-2-9у-6=-5у-8

Answer 2

a) 3a - 7b - 6a + 8b = (3a - 6a) + (8b - 7b) = -3a + b

б) 3(4x + 2) - 6 = 12x + 6 - 6 = 12x

в) 2(2y - 1) - 3(3y + 2) = 4y - 2 - 9y - 6 = -5y - 8