Question

Find the solution to the system: y=4x and 3x+2y=55

Answer 1

x = 5, y = 20

Explanation:

if y = 4x and 3x+2y = 55 then we can subtitude y as x.

We know that y = 4x so we can write 4x wherever we see y.

3x + 2y = 3x + 2(4x) = 55

3x + 8x = 55

11x = 55

x = 5.

And if y = 4x = 4(5)

y = 20