12.5(x+y)=9750 13(x-12.5(x+y)=9750 13(x-y)=9750
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12.5(x+y)=975013(x-12.5(x+y)=975013(x-y)=975012.5(x+y)=975013(x-12.5(x+y)=975013(x-y)=975012.5(x+y)=
12.5(x+y)=9750 13(x-12.5(x+y)=9750 13(x-y)=9750
12.5(x+y)=9750 13(x-
12.5(x+y)=9750 13(x-y)=9750
12.5(x+y)=9750 13(x-12.5(x+y)=9750 13(x-y)=9750
12.5(x+y)=9750 13(x-12.5(x+y)=9750 13(x-y)=9750
x+x+x+x+y=40 x+y= 13x=y=
(x+y)×12.5=9750 (y-x)×13=9750 .二元一次方程
12.5(x+y)=9750 13(X-Y)=9750过程二元一次方程组
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
化简 x / y(x+y) - y / x(x+y) =
y=x(x
x(x+y)(x-y)-y(y+x)(y-x)=(x-y)( )填空
x+x+x+x+y+y+y=56
12.5(x+y)=9750 13(x-y)=9750 帮我解 消元12.5(x+y)=975013(x-y)=9750帮我解 消元
解二元一次方程:12.5(X+Y)=9750 13(X-Y)=9750要过程
二元一次方程怎么解?(x+y)*12.5=9750 ① (x-y)*13=9750②
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