Question

Solve the system below using Substitution or Linear Combination. You must show your

work to receive credit.
3x+4y= 30
{
4x+y = 27​

Answer 1

(6,3)

Explanation:

3x+4y=30

-4(4x+y=27)

3x+4y=30

-16x-4y=-108

-13x=-78

x=6

3(6)+4y=30

18+4y=30

30-18=12

4y=12

y=3

(6,3)