20乘0点4减1点2X等于5.6 解方程

问题描述:

20乘0点4减1点2X等于5.6 解方程

x=2

20*0.4-1.2x=5.6
8=5.6+1.2x
2.4=1.2x
x=2

X=2

20*0.4-1.2x=5.6
8-5.6=1.2x
2.4=1.2x
x=2

20×0.4-1.2x=5.6
8-5.6=1.2x
x=2

20×0.4-1.2X=5.6
8-1.2X=5.6
8-5.6=1.2X
1.2X=2.4
X=2.4/1.2
X=2

20×0.4-1.2x=5.6
8-1.2x=5.6
1.2x=2.4
x=2

1.2X=8-5.6
X=2
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