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Solve using substitution. 7x + 9y = –7 y = 7
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21 votes
Solve using substitution. 7x + 9y = –7 y = 7

User Abhinav Mathur
by
6.7k points

1 Answer

10 votes

Answer:


x = - 10

Explanation:


7x + 9y = - 7


7x + 9(7) = - 7


7x + 63 = - 7


7x + 63 - 63 = - 7 - 63


7x = - 70


7x / 7 = - 70 / 7


x = - 10

User Stevanicus
by
6.9k points
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