解方程:x ×(1-80%)=(108-x )×(1-75%)
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解方程:x ×(1-80%)=(108-x )×(1-75%)
解方程:x ×(1-80%)=(108-x )×(1-75%)
解方程:x ×(1-80%)=(108-x )×(1-75%)
X =60
0.2x=108×0.15-0.15x
x=60
x-80%x=(108-x)•25%
0.2x=27-0.25x
0.45x=27
x=60
x=60
0.2x=(108-x)*0.25
X=60
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