Answer:
3a-10=4+a first subtract a from 3a, this equals 2a-10=4 then add 10 to 4, this equals 2a=14, then divide 14 by 2, the answer is a=7
What do you need help with?
If theta is less than 90 degrees, wouldn't it be an acute angle?
Answer:
2x−5y=12
y = 2/5x + −12/5
Answer is x = 5/2y + 6 because....
First, Add 5y to both sides.
2x − 5y + 5y = 12 + 5y
Then, Divide both sides by 2.

Therefor, your answer is going to be x = 5/2y + 6
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