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Question
Can you help me with this problem.
2(9n-1)+7(n+6)=-60
Thanks!
The first thing to do is to multiply out the parenthesis.
The 2(9n-1) = 2*9n - 2*1 = 18n - 2.
The 7(n+6) = 7*n + 7*6 = 7n + 42.
Putting these in gives 18n - 2 + 7n + 42 = -60.
On the left side, 18n + 7n = (18+7)n = 25n and -2 + 42 = 40,
so this becomes 25n +40 = -60.
To solve this, subtract 40 from each side and then divide both sides by 25. The answer should be a negative integer.
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Scott A Wilson
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Any algebraic question you've got, like linear, quadratic, exponential, etc.
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MS at math OSU in mathematics at OSU
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