0.40Y+(0.40Y-10)+30=Y
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0.40Y+(0.40Y-10)+30=Y
解这到方程
解这到方程
![0.40Y+(0.40Y-10)+30=Y](/uploads/image/z/19693719-63-9.jpg?t=0.40Y%2B%EF%BC%880.40Y-10%EF%BC%89%2B30%3DY)
去括号:0.40Y+0.40Y-10+30=Y
移项:0.40Y+0.40Y-Y=10-30,
合并同类项:-0.2Y=-20,
系数化为1,Y=100
移项:0.40Y+0.40Y-Y=10-30,
合并同类项:-0.2Y=-20,
系数化为1,Y=100
Y.
解方程组:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
y-12/y=?
已知y-2x=10,求[2y(x-y)-(x-y)2+(x+y)2-2xy]÷4y的值.
已知2x-y=10,求代数式[(x²+y²)-(x-y)²+2y(x-y)]÷4y的值?
已知2x-y=10 【(x²+y²)-(x-y)²+2y(x-y)】÷4y 过程
2x-y=10 【(x²+y²)-(x-y)²+2y(x-y)】÷4y
2.5y+10y-6y=15-21.5
8y+12=8-8y-5y+10
已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y
10(8-y)+6y=56
超急~!解方程组 y-10x=30%y y-10(x+6)=10%y