X·1.35×0.8-50-X=166

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X·1.35×0.8-50-X=166X·1.35×0.8-50-X=166X·1.35×0.8-50-X=166X·1.35×0.8-50-X=1661.08x-x=2160.08x=216x=27

X·1.35×0.8-50-X=166
X·1.35×0.8-50-X=166

X·1.35×0.8-50-X=166
X·1.35×0.8-50-X=166
1.08x-x=216
0.08x=216
x=2700

1.08X-X=216
0.08X=216
X=216/0.08
X=2700

那个点是??

1.35Xx0.8-50-X=166
1.08X-X=216
0.08X=216
X=2700

=1.08x-50-x=166
0 .08x-50=166
0.08x=166+50
0.08x=216
x=216÷0.08
后面自己算