Ah, math time, my favorite! To reduce the fraction w^2 + 5w + 6 over w^2 - w - 12, first factor both the numerator and the denominator. The numerator factors into (w + 2)(w + 3), and the denominator factors into (w + 3)(w - 4). Cancel out the common factor of (w + 3) in both the numerator and the denominator, leaving you with (w + 2) over (w - 4). Voilà!
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(w² + 5w + 6) / (w² - w - 12)
= [(w + 2)(w + 3)] / [(w - 4)(w + 3)]
= (w + 2) / (w - 4)
1 1/3 or 4/3
-3/2 + 8/5 = 1/10
12 over 15
One over six plus one over six is 2/6. That fraction can be reduced to 1/3. Two over three is written as 2/3. 2/3 plus 1/3 is equal to 1, or a whole.
5 over 8 plus 7 over 8 equals to 12 over 8. In simpler forms this is either 3 over 2 as a fraction or 1.5 as a decimal.