2x+5.4=18.9 2x-2.8=9.96 (x-0.8)×4=7.2
①5x+1.7=5.3
②38﹣4x=16
③(x+7.5)÷0.2=45
①4x+4.8=20
②5(x+0.4)=5
③3(x-2.4)÷5=1.8
④0.3×2.8+1.5x=3.6x
x+18-25=43 27x+31x=145 7x-16×4=27
6×0.8+7x=19.5 x-0.8x=10 3.6x÷2=2.16