Can anyone help with Adding rational expressions?

0 ⤊

Can anyone help with Adding rational expressions?

(t+2w) / (4t) + (7t-8w) / (3t) -3

Thanks!

2007-08-01 04:20:53 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

2 answers

[(3t + 6w) / 12t ] + [ (28t - 32w) / 12t ] - 3
[ (31t - 26w) / 12t ] - [ 36t / 12t ]
(31t - 26w - 36t) / (12t)
(- 5t - 26w) / 12t
- (5t + 26w) / 12t

2007-08-04 23:10:44 · answer #1 · answered by Como 7 · 0⤊ 0⤋

Just like adding fractions with uneven denominators. Find the lcd first:
[(t+2w)*(3t-3) + (7t-8w)*(4t)]/ [4t*(3t-3)]
Multiply out, combine like terms, simplify and you got it.

2007-08-01 04:27:04 · answer #2 · answered by cattbarf 7 · 0⤊ 0⤋