Solve the system below using Substitution or Linear Combination. You must show your work to receive credit. 3x+4y= 30 { 4x+y = 27

asked Jul 13, 2023 210k views

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

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

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5 votes

Answer:

(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)

Eftekhari answered Jul 18, 2023

4.8k points

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