(x-5)(100-7(x-7))=y
1个回答
(x-5)(100-7x+49)=y
(x-5)(149-7x)=y
149x-7x²-745+35x=y
184x-7x²-745=y
相关问题
(x-5)(100-7(x-7))=y 求化简
7=(x-5)÷y 且x必须≥100
当x=( )时,分式5(x+y)/(7x+7y)=5/7
把方程5x-6y=7变形可得y=[5x−7/6][5x−7/6],x=[6y+7/5][6y+7/5].
x+y=100 4/9x+2/7y=100-60
计算:[5X+7Y-3][5X+3-7Y]
(5x+7y-3)×(5x-7y+3)=()
x-3y=-20 3x+7y=100
计算 3(2x-7y)(7y+2x)+(4x+5y)(-5y-4x)
X+Y=7(100X+Y)-(10Y+X)=(10Y+X)-(10X+Y)