Question

solve the following pair of linear equations ​

Answer 1

3x + 4y=10

3x=10-4y

x=10-4y/3. (1)

2x-2y=2

sustituting x,in (1)

2(10-4y/3)=2

20-8y/3=2

4(5-2y/3)=2

2(5-2y)=0

-2y=-5

y=5/2

substituting y,in (1),

x=10-4*5/2/3

x=10-2*5/3

x=10-10/3

x=30-10/3

x=20/3