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12 questions from this quiz
Fractions with variables in numerator/denominator
A common denominator
Find the common denominator
Add or subtract them
8x−912\frac{8x - 9}{12}128x−9
(x+3)(x−4)(x + 3)(x - 4)(x+3)(x−4)
2x+3x(x+3)\frac{2x + 3}{x(x + 3)}x(x+3)2x+3
Simplify the answer
Forgetting to multiply numerator and denominator
LCD First
Substitute x = 1 in both expressions
10x+912\frac{10x + 9}{12}1210x+9
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