Solve the following systems of equations with substitution and give the solution.

b.

y = x + 15

y = 2x

(?,?)

c.

y = 4x + 45

x = 4y

(?,?)

Question

Mathematics

Lilly Berg

4 February, 15:26

Solve the following systems of equations with substitution and give the solution.

b.

y = x + 15

y = 2x

(?,?)

c.

y = 4x + 45

x = 4y

(?,?)

+5

Answers (1)

Know the Answer?

Brennan Huerta · Answer 1

B.

y = x+15

Therefore x+15 = 2x

x = 15

y = 15+15=30

(x, y) = (15,30)

c.

x = 4y

x = 4 (4x+45)

x = 16x + 180

15x = - 180

x = - 12

y = - 12/4 = - 3

(x, y) = (-12,-3)

Solve the following systems of equations with substitution and give the solution.b.y = x + 15y = 2x(?,?)c.y = 4x + 45x = 4y(?,?)

Solve the following systems of equations with substitution and give the solution.

b.

y = x + 15

y = 2x

(?,?)

c.

y = 4x + 45

x = 4y

(?,?)