Question

Find the solution of the system of equations.
6x – 3y = -30
3x – 6y = 12

Answer 1

Explanation:

6x – 3y = -30

3x – 6y = 12

Multiply the top equation by 2 and write the bottom equation under it.

12x - 6y = - 60

3x - 6y = 12 Subtract

9x = - 72 Divide by 9

x = - 72/9

x = - 8

6x - 3y = - 30

6*-8 - 3y = -30

-48 - 3y = - 30 Add 48 to both sides.

-3y = - 30 + 48

-3y = 18 Divide by -3

y = -18/-3

y = -6