(60X-y)÷60+5+y÷100=X这个方程怎么解
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(60X-y)÷60+5+y÷100=X这个方程怎么解
(60X-y)÷60+5+y÷100=X这个方程怎么解
(60X-y)÷60+5+y÷100=X这个方程怎么解
(60X-y)÷60+5+y÷100=X
X-y/60+5+y/100=X
-y/60+y/100=-5
(-10y+6y)/600=-5
-4y/600=-5
y=750
小东是在离学校750米的地方吃早点.
是不是缺条件?
(60X-y)÷60+5+y÷100=X这个方程怎么解
先化简,再求值[(2x+y)^2-(2x+y)(2x-y)-y(5x+y)]÷(1/2y),其中x-y=2
[2(x-y)^5-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2
x+x+x+y=60 .x-y=4
已知x²+4y²-4x+4y+5=0,求(2x-y)(x+y)/x四次方-y四次方×xy-y²/2x-y÷(y/x²+y²)²
{2x=y x/60+y/100=2.2
[(x+2y)^2-(x-y)(x+2y)-5y^2]÷(2y)
[(x+2y)(x-2y)-(x+4y)²]÷4,其中x=5,y=-2
计算[(x+2y)²-(x+y)(x-y)-5y²]÷(2x)
[(2x-y)(2x+y)+y(y-6x)]÷2x=?
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60=x*y+5x+5y求x和y
X/Y=2/5 X+60/Y=4/7 问X.Y各是多少
先化简,再求值:y(x-y)-x(x+y)/x²-y²÷x²+y²/x+y,其中x=2,y=-1
2x-y=2,求[(x²+y²)-(x-y)²+2y(x-y)]÷4y
1-[(x-y)/(x+2y)]÷[(x+y)(x-y)/(x+2y)²] 1-[(x-y)/(x+2y)]÷[(x+y)(x-y)/(x+2y)²]=