解x+80=1.2x

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解x+80=1.2x解x+80=1.2x解x+80=1.2x答:1.2x-x=80x(1.2-1)=800.2x=80x=400X=4002001.2x-x=80,0.2x=80,x=400全部展开收

解x+80=1.2x
解x+80=1.2x

解x+80=1.2x
答:1.2x-x=80
x(1.2-1)=80
0.2x=80
x=400

X=400

200

1.2x-x=80,0.2x=80,x=400

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你好
解x+80=1.2x
0.2x=80
x=400

(1.2-1)x=80
0.2x=80
x=400

x=400

400

x+80=1.2x
x-1.2x=-80
-0.2x=-80
x=400

把1.2x分成x+0.2x
0.2x=80
x=400

x+80=1.2x
0.2x=80
x=400