y+1=3x+2(1) 4x+2(y+1)=5(2)怎么解

问题描述:

y+1=3x+2(1) 4x+2(y+1)=5(2)怎么解

(1)y=3x+2-1=3x+1 将(1)y=3x+1代入(2)式得
4x+2(3x+1+1)=5 (3)
将(3)式化简得:x=0.1,
将x代入原式得y=1.3
故x=0.1,y=1.3