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Georgia [21]
3 years ago
12

10x-35+3ax=5ax-7a solve for "a" for which the equation is an identity.

Mathematics
2 answers:
Tresset [83]3 years ago
8 0
10x-35+3ax=5ax-7a \\\\ 3ax-5ax+7a = -10x+35 \\\\ -2ax+7a = -10x+35 \\\\ a(-2x+7)=-10x+35 \\\\ a= \frac{-10x+35}{-2x+7} \\\\ a = \frac{5(-2x+7)}{(-2x+7)} \\\\ a=5
ella [17]3 years ago
6 0
You can solve it by using PEMDAS

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Kadisha's method works because 15% is 3 times 5%, and both amounts are computed on the amount of the bill before tax is added.

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chubhunter [2.5K]

Answer:


Step-by-step explanation:

She has 28056 before any deductions are taken off. As far as the IRS is concerned every penny she earns is fully accountable for the 4 categories that she has to pay into.

The problem with the question is you are not told what is wanted. Do they want the income before or after the deductions have been made or do they want the accountable sum (28056)? I don't really know. 28056 is one possible answer.

Total deductions

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I think the answer you want is 28056

One answer it is not is 4*28056 = 112224. The tax is far too low for that kind of income.

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3 years ago
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Step-by-step explanation:

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