(3y+5+6x)-(3y+5x-7) 简化
3个回答
(3y+5+6x)-(3y+5x-7)=3y+5+6x-3y-5x+7
=x+12
相关问题
送分的5x+y=7,3x-y=1 4x-3y=5,4x+6y=14 6x+7y=5,6x-7y=190.5x-3y=-1
3x+5y-(x+y)=6 2(x+y)-3x=-7
2x-3y-2=0 5x+3y=18 2x-3y=7 (2x-3y+5)/7+2y=9 2x-3y=3 6x+5y=35
5x^3y-6x-7x^3y-8x=
1、(2x+3y)(3x-5y)-(x+y)(6x-7y)
解下列方程组.1.7x-3y=5,-5x+6y=-6 2.3(x-1)=5分之y+5,5(y-1)=3(x+5).
求解{4x-3y=5.6 5x+3y=7.4
- {5x-2y=3{x+6y=7- {x+2y=0{3x+4y-6=0- {x-y=5{2x=15-3y- {3x-2
5x-2y=3 x+6y=7
8y-(8-5y)=3y+2(4y+7) 8-3y=6-x 4x-3(20-x)=5x-7(20-