Question

2x+3y=12 and x-y-1=0 then find value of x

Answer 1

Answer:

2x + 3y = 12

x - y - 1 = 0

x - y = 1

so,

2x + 3y = 12 |×1|

x - y = 1 |×2|

2x + 3y = 12

2x - 2y = 2

___________ -

5y = 10

y = 2

subsitution y = 2 to,

x - y = 1

x - 2 = 1

x = 3

the answer for x is 3