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Hello,
The answer will be "-5+2".
Reason:
I These lines turn negative numbers into positive:
Therefore the answer will be -5+2 (since how the first - sign was outside of the I).
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Hope this helps!
~Nonportrit
The greatest common factor (GCF) of 15 and 30 is: 15
Factors of 15: 1, 3, 5, 15
Factors of 30: 1, 2, 3, 5, 6, 10, 15
The common factors between the two numbers are 1, 3, 5, and 15, but considering 15 is the highest number out of them all, it is the greatest common factor.
Ax + c = R (subtract c from each side)
Ax + c - c = R - c
Ax = R - c (divide A from each side)
Ax/A = (R-c)/A
x = 
<-answer