Question

2х +5(2х-4)=23-5х
–х – 2(2,5 -1,5х) = -8х
3х+ 7(х-2) – 12=-4(2,5 +0,5х)
) (x+3)/12 –(x-3)/4 =(x+2)/6
(y²+4y-9)-(8y²-9y-5)=8+13y-7y²
(3x-5)(2x+7)=(3x+1)(2x-3)+4x.
(7x+1)(x-3)+20(x-1)(x+1)=3(3x-2)²+13