Question

Solution of 2x+3y=12,2y-1=x is

Answer 1

Answer:

x=3,y=2

Step-by-step explanation:

2x+3y=12 (1)

2y-1=×

-x+2y=1 (2)

Multiplying eq (2) by '2' we get

-2x +4y = 2 (3)

Adding eq (1) by (3)

2x+3y=12 (1)

-2x+4y = 2 (3)

(-) (+) (+)

0 + 7y= 14

y= 14

7

y=2

Substituting y=2 in eq (2)

-x+2×2=1

-x+4=1

-x=1-4

-x=-3

x=3