解方程 x-0.12X=2.816

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解方程 x-0.12X=2.816
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解方程 x-0.12X=2.816
解方程 x-0.12X=2.816

解方程 x-0.12X=2.816
x-0.12X=2.816
0.88x=2.816
x=2.816/0.88
x=3.2

x-0.12x=2.816
(1-0.12)x=2.816
0.88x=2.816
x=2.816÷0.88
x=3.2

x-0.12X=2.816
0.96x=2.816
x=2.816/0.96
x=2.9333

x-0.12x=0.88x
即0.88x=2.816
x=2.816/0.12
=23.467

X=2.816/0.88
X=3.2

x-0.12X=2.816
0.88x=2.816 x=2.816\0.88 接下来你自己算得数

解:x=2·816÷0·88