x+35=79.4
X+35-35=79.4-35
X=44.4
x-5.4=0.8
X-5.4+5.4=0.8+5.4
X=6.2
x/5=4.26
X/5x5=4.26x5
X=21.3
3.6x=9.72
3.6X/3.6=9.72/3.6
X=2.6722.
1.5x=4.5
1.5X/1.5=4.5/1.5
X=3
检验：把X=3代入原方程,左边=1.5x3=4.5,右边=4.5,
左边=右边,所以,X=1.5是原方程的解.
x/0.92=1.5
X/0.92x0.92=15x0.92
X=1.38
检验：把X=1.38带入原方程,左边=1.38/0.92=1.5,右边=1.5,
左边=右边,所以,X=1.38是原方程的解.