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3x + 4y = 5 X- 3y = -7 Solve by substitution
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2 votes
3x + 4y = 5
X- 3y = -7


Solve by substitution

User RamAlx
by
7.8k points

1 Answer

5 votes
x = 3y - 7
3x + 4y = 5

3(3y - 7) + 4y = 5
9y - 21 + 4y = 5

13y - 21 = 5

13y = 26

y = 2

x - 3(2)= -7

x - 6 = -7

x = -1

(-1, 2)
User Sebastian
by
8.0k points
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