-3(x-3)=3x+4
3(3y-1)-1=2(5y-7)
4(5y+4)+3(y-1)=2-(5y-5)
过程就不必了 答案
-3(x-3)=3x+4
3(3y-1)-1=2(5y-7)
4(5y+4)+3(y-1)=2-(5y-5)
过程就不必了 答案
3(3y-1)-1=2(5y-7) 9y-3-1=10y-14 y=10
4(5y+4)+3(y-1)=2-(5y-5) 20y+16+3y-3=2-5y+5 28y=-6 y=-3/14
1、 x=5/6
2、 y=10
3、 y= -3/14