Question

Solve the system of equations by using substitution
x=3y
2x+4y=10

Answer 1

(3, 1 )

Explanation:

x = 3y → (1)

2x + 4y = 10 → (2)

substitute x = 3y into (2)

2(3y) + 4y = 10

6y + 4y = 10

10y = 10 ( divide both sides by 10 )

y = 1

substitute y = 1 into (1)

x = 3y = 3(1) = 3

solution is (3, 1 )