0.1(x+6)=3.3×2/5 4(x-5.6)=1.6 7(6.5+x)=7/8÷0.01 2(2-x)+2=x+1
0.1(x+6)=3.3×2/5 4(x-5.6)=1.6 7(6.5+x)=7/8÷0.01 2(2-x)+2=x+1 y-4=3/10y+3 2/5x-3=0.1x+2
0.1(x+6)=3.3×2/5 4(x-5.6)=1.6 7(6.5+x)=7/8÷0.01 2(2-x)+2=x+1
y-4=3/10y+3 2/5x-3=0.1x+2 1.1-1/10x=4又1/2-0.27x 1.2x-120=0.4x-30
(450-10x)×2=135-5x