Question

7 – Зу = 20

y = 5х – 4
QUICK! how do i do this i need the x and y this is the Systems of equations with substitution

Answer 1

x=1/15 y = -4 1/3

Explanation:

First combine like terms.

-3y = 13

y= -13/3

y= -4 1/3

Substitute for y in next equation

-4 1/3 = 5x - 4

5x = 4 1/3 - 4

5x = 4 1/3 - 4

5x = 1/3

x = 1/3 divided by 5

Since fractions can't be divided, multiply by the inverse

x = 1/3 times 1/5 = 1/15