Question

how to do this sum using substitution method? ​

Answer 1

Answer:

2(x-y) =2

x-y=1

x=1+y............(1)

in the Equation of

3x+4y=10

3(1+y)+4y=10

3+3y+4y=10

3+7y=10

7y=10-3

y=1

now y =1 in

equation of

x=1+1=2..... hence over =

x=2and y=1