40-x=3.9解方程 急!~~~~~~

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40-x=3.9解方程急!~~~~~~40-x=3.9解方程急!~~~~~~40-x=3.9解方程急!~~~~~~x=40-3.9即:x=36.1x=36.140-x=3.9x=40-3.9x=36.

40-x=3.9解方程 急!~~~~~~
40-x=3.9解方程 急!~~~~~~

40-x=3.9解方程 急!~~~~~~
x=40-3.9
即:x=36.1

x=36.1

40-x =3.9
x =40-3.9
x = 36.1

40-x=3.9
x=40-3.9
x=36.1

40-x=3.9
-x=-36.1
x=36.1