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Reil [10]
3 years ago
12

Which equation is equivalent to 3[x + 3(4x – 5)] = 15x – 24?

Mathematics
1 answer:
iragen [17]3 years ago
6 0
3[x + 3(4x - 5)] = 15x - 24
3(x + 12x - 15) = 15x - 24
3(13x - 15) = 15x - 24
39x - 45 = 15x - 24    |add 45 to both sides
39x = 15x + 21      |subtract 15x from both sides
24x = 21      |divide both sides by 24
x = 21/24
x = 7/8

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Answer:

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Step-by-step explanation:

Let the number of quarters be x and nickels be y.

<u>Given:</u>

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<u>We have equations:</u>

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<u>Solve the system by elimination, subtract 5 times the first equation from the second one:</u>

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<u>Verify:</u>

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Step-by-step explanation:

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