Question

Solve by the add and subtract method (elimination)
x + y = 13
x- y = 7

Answer 1

solve this by addition of equations
add the similar terms
x+x=2x
y+(-y)=0
13+7=20
then the product equation will be
2x=20
divide both sides by 2
x=10

Answer 2

What about Y?

Answer 3

and then plug in the value of x=10 in one of the equations
x+y=13
10+y=13
we subtract 10 from both sides
y=13-10
y=3

Answer 4

got it ?

Answer 5

@BigBoyLP

Answer 6

Yes thank you @Abdulhameed

Answer 7

@BigBoyLP anytime :)