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19 votes
19 votes
2x - 3y = 9
x = 4 + y

User KatieK
by
2.7k points

1 Answer

8 votes
8 votes

Answer:

x = 3; y = -1

Explanation:

2x - 3y = 9

x = 4 + y

Since the second equation is already solved for x, use the substitution method. Substitute 4 + y for x in the first equation and solve for y.

2x - 3y = 9

2(4 + y) - 3y = 9

8 + 2y - 3y = 9

-y = 1

y = -1

Now substitute -1 for y in the second original equation, and solve for x.

x = 4 + y

x = 4 + (-1)

x = 3

Answer: x = 3; y = -1

User Michael Lehenbauer
by
2.9k points