Answer:
x = 1
y = 7
Step-by-step explanation:
Given
-5x + 2y = 9
y = 7x
Substitute 7x for y in the first equation.
We have,
-5x + 2(7x) = 9
-5x + 14x = 9
9x = 9
Divide both sides by 9
9x/9 = 9/9
x = 1
Substitute 1 for x In either of the above equations to get y.
Using the second equation,
We have
y = 7x
Therefore
y = 7 x 1
y = 7
x = 1 and
y = 7
