1.x-(3x-1)=5(x+2) 2.2(x+1)=1-(x+3) 3.20-y=6y-4(y-11)4.2-(4-y)=6y-2(y+1)
问题描述:
1.x-(3x-1)=5(x+2) 2.2(x+1)=1-(x+3) 3.20-y=6y-4(y-11)4.2-(4-y)=6y-2(y+1)
答
1.x-(3x-1)=5(x+2) 2.2(x+1)=1-(x+3) 3.20-y=6y-4(y-11)4.2-(4-y)=6y-2(y+1)