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3 years ago

−3(2a−14)−3a=24 what is a

Mathematics

1 answer:

tatuchka [14]3 years ago

5 0

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$- 3(2a - 14) - 3a = 24$

$- 6a + 42 - 3a = 24$

$- 9a + 42 = 24$

Subtract sides 42

$- 9a + 42 - 42 = 24 - 42$

$- 9a = - 18$

Divide sides by - 9

$\frac{ - 9a}{ - 9} = \frac{ - 18}{ - 9} \\$

$a = 2$

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CHECK :

$- 3(2(2) - 14) - 3(2) = 24$

$- 3(4 - 14) - 6 = 24$

$- 3( - 10) - 6 = 24$

$30 - 6 = 24$

$24 = 24$

Thus the solution is correct.....

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ANSWER

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EXPLANATION

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