Question

4(1-0,5х)=-2(3+2х)
5х+27=4х+21
у-15=4(3-2у)
помогите плииз

Answer 1

1) 4-2х=-6-4х; -2х-4х=4-6; -6х=-2; х=1/3. 2)5х-4х=-27+21; х=-6. 3)у-15=12-8у у+8у=15+12; 9у=27; у=3.