2x-7(7x-2y)-2(x+6y)
2个回答
2x-7(7x-2y)-2(x+6y)
=2x-49x+14y-2x-12y
=2y-49x
相关问题
{6X+7y}+{6x+7y}+{6x+7y}2次方 等于
因式分解：7(x^2-7y^2)-3x(x+2y)+6xy
x2-xy-6y2+x+7y-2
x^2-xy-2y^2+x+7y-6
4x-(2x+y+16)/2=-6y 2x+3y=7-x-2y
y^2+y-20x^2-x-6(x+2)(x-4)-7
2(x-y)^2-7(x-y)+6(x-y)-3(y-x)^2合并同类项
y-x/7-x+y/6=1/2 5(x+y)-2(y-x)=1
因式分解：x^2-xy-2y^2+x+7y-6
解方程:(2x+y+6)/2=(4x-3y-7)/3=(10-6x-7y)/4