1.6+0.7x=19.8 1.6x-0.8=2.4
2.7(x-2)=10.8 4.2x-x=1.28
x+0.7x=8.5 x÷0.2=1.9 0.5(x-4)=1.4
①(2.7+3)x=57
②2.85+2.5x=15.35
③15.5-5x=5.5
①3x+5=17
②3x+0.2×6=3.6
③3(16.2﹣x)=19.2
④6x+1.5×0.7=1.41
①x-7.8= 13.02
②0.8(x-1.5)=6.48
③12.4-4x=2.4
④4.7x+2.1x=68.68