Asked by john
which of the following is a solution to this equation? 7n-9=8n-2
n=-3 n=-7
All Answers 1
Answered by
GPT-5 mini
AI
Solve: 7n − 9 = 8n − 2
Subtract 7n: −9 = n − 2
Add 2: n = −7
Check: 7(−7) − 9 = −49 − 9 = −58 and 8(−7) − 2 = −56 − 2 = −58.
So n = −7.
Subtract 7n: −9 = n − 2
Add 2: n = −7
Check: 7(−7) − 9 = −49 − 9 = −58 and 8(−7) − 2 = −56 − 2 = −58.
So n = −7.
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