-8
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7a-b=15a Subtract 7a from both sides
-7a -7a
-b=8a
-b/8=8a/8 Divide each side by 8
-b/8=a Solve
-2ab
The LCM is 280a4b2.
5a(a(a-5)+3)
It's not always to 'solve' as it is to 'simplify' EX: 15a + 3b = 45c simplifies to 5a + b = 15c
I think it is 3.14 that equals to pi when u solve it