Question

Solve the following system of equations using substitution.



5y = x - 15

-3y = -12x - 9





What is the value of x?

(Enter as a fraction)

Answer 1

Answer:

x - 15 = 5y

x = 5y + 15

-3y = -12(5y + 15)

-3y = -60y - 180

57y = 180

y = 60/19= 3 3/19

x = 5(60/19) + 15

x = 300/19 + 15

x = 300/19 + 285/19

x = 585/19= 30 15/19

Step-by-step explanation: