Solve the system by substitution.

Question

y, equals, 7, x, minus, 20
y=
7x−20
y, equals, 2, x
y=
2x

Answer 1

Since both equations are solved for y, we can set the two expressions for y equal to each other and solve for x:

7x - 20 = 2x
5x = 20
x = 4

Now that we have found x, we can substitute this value back into one of the original equations to find y:

y = 2(4)
y = 8

Therefore, the solution to the system of equations is x = 4 and y = 8.