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5 votes
4x + 4y = 40
2x - 4y = 8

User Sgedda
by
7.9k points

1 Answer

4 votes

Answer:

x=8 y=2

Explanation:

solve for x

1. 4x+4y=40

2. subtract 4y from both sides

3. 4x=40-4y

4. divide both sides by 40

5.
(4x)/(4) = (40-4y)/(4)

6. dividing by four undoes the multiplication by four

7.
x=(40-4y)/(4)

8. divide 40 - 4y by 4

9. x=10-y

10. use the last equation to solve the rest

User Igrigorik
by
8.3k points

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