Question

2x-y=-1. 2x+3y=11 substiutional method solve

Answer 1

2x-y = -1

2x+1 =y --1equation
__________

2x+3y =11

Putting the value of y from 1equation,

2x+3[2x+1] =11

2x+6x+3 =11

8x +3=11

8x =11-3

8x =8

x=8/8

x=1


Putting the value of x in 1equation,

2(1)+1=y

2+1=y

3=y


_______,

x=1
y=3



I hope this this will help you


-by ABHAY