1、解:2(x-3)+3(2x-1)=5(x+3)2X-6+6X-3=5X-158X-9=5X-153X=-6X=-22、解:7-x/4=x-3 7-X=4X-12 -5X=-19 X=19/53、解:4(x+5)=2-3(2x-7) 4X+20=2-6X+21 10X=3 X =3/10
答案分别是8,8,0.3