Question

Solve the given system of equations by substitution.
y=x
x-y=18

Thank you.

Answer 1

its y+x=18 sorrry

Answer 2

Its a plus my mistake.

Answer 3

Then:


y = x

Put it in second:

x + y = 18

x + x = 18

2x = 18

Divide by 2 both the sides and find x from here..

and y will be same as x..

Answer 4

Thank you so much as always.

Answer 5

Welcome dear..