15 1/3 - 7 4/5
18 1/5 - 3 7/8
2007-09-06 04:47:04 · 4 answers · asked by Jolene 2 in Science & Mathematics ➔ Mathematics
15 1/3-7 4/5
=46/3 - 39/5
=230/15 -117/15
=113/15
=7 8/15 ans
18 1/5 -3 7/8
=91/5 -31/8
=728/40 -155/40
=573/40
=14 13/40 ans
2007-09-06 04:56:47 · answer #1 · answered by Anonymous · 0⤊ 1⤋
These are arithmeticproblems -- not Algebra
15 1/3 - 7 4/5 = 15 5/15 - 7 12/15
= 14 20/15- 7 12/15 = 7 8/15
18 1/5 - 3 7/8
= 18 8/40 - 3 35/40
= 17 48/40 -3 35/40
= 14 13/40
2007-09-06 04:58:51 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋
The easiest way is to convert each number to a fraction and then find the least common denominator. So for the first one:
15 1/3 - 7 4/5
= 46/3 - 39/5
= 230/15 - 117/15
= 113/15, or 7 8/15.
And the second one:
18 1/5 - 3 7/8
= 91/5 - 31/8
= 728/40 - 155/40
= 573/40, or 14 13/40.
2007-09-06 04:53:41 · answer #3 · answered by RustyL71 4 · 0⤊ 1⤋
i don't see an equals sign or any inequalities, so i'm guessing you're meant to simplify it. 3x^2 + 3x - x^2 + 5 + 5x Regroup: 3x^2 - x^2 + 3x + 5x - 5 combine like words: 2x^2 + 8x + 5
2016-11-14 08:33:10 · answer #4 · answered by Anonymous · 0⤊ 0⤋