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Scrat [10]
3 years ago
12

Solve: 3a - 15 = 6 a=

Mathematics
2 answers:
Assoli18 [71]3 years ago
4 0

Answer: a=7

<u>Reorder the terms</u>

<u></u>-15 + 3a = 6<u></u>

<u></u>

Solving for variable 'a'.

<u> </u>

Move all terms containing a to the left, all other terms to the right.

<u>Add '15' to each side of the equation.</u>

<u></u>-15 + 15 + 3a = 6 + 15<u></u>

<u></u>

<u>Combine like terms: -15 + 15 = 0 </u>

<u></u>0 + 3a = 6 + 15\\3a = 6 + 15<u></u>

<u></u>

<u>Combine like terms: 6 + 15 = 21 </u>

<u></u>3a = 21<u></u>

<u></u>

<u>Divide each side by '3'. </u>

<u></u>a = 7<u></u>

DENIUS [597]3 years ago
3 0

Answer:

a=7

Step-by-step explanation:

3a - 15 = 6

3a = 21 -> 6+15

21/3 = 7

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