解方程(x-10)X28=(x-6)X20
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解方程(x-10)X28=(x-6)X20
解方程(x-10)X28=(x-6)X20
解方程(x-10)X28=(x-6)X20
28x-280=20x-120
8x=160
x=20
28x-280=20x-120
8x=160
x=20
(x-10)X28=(x-6)X20
28x-28*10=20x-20*6
8x=160
x=20
(x-10)X28=(x-6)X20
28(x-10)=20(x-6)
7(x-10)=5(x-6)
7x-70=5x-30
7x-5x=70-30
2x=40
x=20
28X-280=20X-120
28X-20X=280-120
8X=160
X=20
(x-10)X28=(x-6)X20
解;xX28-10X28=xX20-6X20
28x-280=20x-120
28x-20x=280-120
8x=160
x=20