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Xelga [282]
2 years ago
12

Which expression is not equivalent to 54x−12 from the amswers below?

Mathematics
1 answer:
DochEvi [55]2 years ago
6 0

The equation that is not equal to 54x-12 is (12x-3)4

(12x-3)4 equals 48x-12 while the other ones equal 54x-12

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Answer:

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Step-by-step explanation:

x + 6y = -2 --- Equation 1

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Equation 2 ×(-1): x = -3y + 10 --- Equation 3

Substitute x = -3y + 10 into Equation 1:

x + 6y = -2

-3y + 10 + 6y = -2

3y + 10 = -2

3y = -2-10

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y = -12 ÷ 3

y = -4

Substitute y = -4 into Equation 3:

x = -3y + 10

x = -3(-4) + 10

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x = 22

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