express each sum or difference as a single fraction in simplest form
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Since 6/3=2, you can combine the "a" terms. 10ab + (a2b)/5 - a + (6/3)a =
Look for common denominator. It's 5. (50/5)ab + (1/5)(a2b) + (5/5)a =
Combine all terms in the numerator and divide by common denominator. (50ab + a2b + 5a)/5