4x-2=3-x -7x+2=2x-4 -x=-0.4x+1 11x+1=5(2x+1) 4x-3(20-x)=3 5(x+8)-5=0 2(3-x)=9 -3(x+3)=24 -2(x-2)=12
问题描述:
4x-2=3-x -7x+2=2x-4 -x=-0.4x+1 11x+1=5(2x+1) 4x-3(20-x)=3 5(x+8)-5=0 2(3-x)=9 -3(x+3)=24 -2(x-2)=12
答
1.4x-2=3-x x =1 2.-7x+2=2x-4 x =三分之二 3.-x=-0.4x+1 x =-三分之五 4.11x+1=5(2x+1) x =4 5.4x-3(20-x)=3 x =9 6.5(x+8)-5=0 x =-7 7.2(3-x)=9 x =-1.5 8.-3(x+3)=24 x =-11 9.-2(x-2)=12 x =-4