4(X+3.4)=32.8 解:4X+13.6=32.8 4X+13.6—13.6=32.8—13.6 4X=19.2 4X除以4=19.2÷4 X=4.8
两边同时除以4得x+3.4=8.2两边同时减去3.4得x=4.8
x+3.4=32.8/4=8.2,x=8.2-3.4=4.8
4(X+3.4)=32.84X+4*3.4=32.84X=32.8-13.6X=19.2÷4X=4.8
4x+13.6=32.84x=19.2x=4.8