Question

решите все пожалуйста

Answer 1

8х-(3,7-х)+(1,2-5х)=8х-3,7+х+1,2-5х=4х-2,5
5/6(3х-у)-(1,5х+1/6у)=5/2х-5/6у-3/2х-1/6у=х-у

5/8х+3/4*1/2х=5/8х+3/8х=8/8х=х=7
7/12*6b-(8-1.5b)=7/2b-8+3/2b=10/2b-8=5b-8=5*4-8=12