Question

Find x and y ff 2x+3y = 12, x-y-1=0​

Answer 1

Answer:

2x+3y=12-----1

2(x-y-1=0)

= 2x-2y=2------2

Subtracting 1and 2 we gets,

2x+3y=12

2x-2y=2

___________

5y=10

y=2

Now,

2x-2y=2

2x-2×2=2

2x=6

x=3

Answer 2

Answer:

2x+3y=12

x+3y=12*2

x+y=24*3

x+y=72

x-y-1=0

x-y=1

x=36