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Solve using elimination -8x - 7y = 7 -9x - 7y = 14
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3 votes
Solve using elimination

-8x - 7y = 7
-9x - 7y = 14

User Johannes Reuter
by
7.7k points

2 Answers

3 votes
x=-7 is what I got :/.
User GirkovArpa
by
7.0k points
5 votes
-9x - (-8x-7) = 14
-9x +8x +7 = 14
-x + 7 = 14
7 = 14 + x
X = - 7

(-8 x - 7) - 7y = 7
56 - 7y = 7
56-7 = 7y
49 = 7y
7 = y

Answer x=-7 and y=7
User Bmb
by
8.0k points
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