解方程:5(X+0.27)=4.5解方程:X(4.5*9)=61.6X=48/2

问题描述:

解方程:5(X+0.27)=4.5
解方程:X(4.5*9)=6
1.6X=48/2

5(X+0.27)=4.5
5x=4.5-0.27*5
x=0.9-0.27
x=0.63

5(x+0.27)=4.5
5x+1.35=4.5
5x=3.15
x=0.63

5(X+0.27)=4.5
x+0.27=0.9
x=0.9-0.27
x=0.63

两边同时除以5 解得x=0.63

5(X+0.27)=4.5
x+0.27=0.9
x=0.63
x﹙4.5×9﹚=6
x=6/﹙4.5×9﹚
x=4/27
1.6x=48/2
1.6x=24
x=24÷1.6
x=72/5.