Question

-GTMA 1 Use the substitution property of equations to solve the following equation for x if y=5x. x+y=18

Answer 1

• x = 3

Explanation:

Use the substitution property of equations to solve the following equation for x :

• y = 5x
• x + y = 18

Let y = 5x (equation 1)

x + y = 18 (equation 2)

Substitute equation 1 in 2

• x + y = 18
• x + 5x = 18
• 6x = 18

Divide both sides by 6

• x = 3

Therefore The value of x is 3.