(x-1.8) ÷2=(x+2.4)÷4方程式左右两边同×4可得(x-1.8) *2=x+2.42x-3.6=x+2.4方程式移项可得2x-x=2.4+3.6x=6解得x等于6
(x-1.8)÷2=(x+2.4)÷4(x-1.8)=(x+2.4)÷22(x-1.8)=x+2.42x-3.6=x+2.4x=3.6+2.4x=6