2007-05-07 08:29:33 · 11 answers · asked by Don S 1 in Science & Mathematics ➔ Mathematics
use 90 as the lcd
5/9+7/30=
50/90 + 21/90=71/90
2007-05-07 08:36:56 · answer #1 · answered by Dave aka Spider Monkey 7 · 0⤊ 1⤋
Find the lowest common denomiator 9 X 30 = 270
Next multiply 5 x 30 = 150
Then 7 x 9 = 63
= 150/270 + 63/270 = 213/270
2007-05-07 15:34:49 · answer #2 · answered by ToScooper 1 · 0⤊ 1⤋
The answer to this question is 71/90 because the denominators of the fraction are unlike so you have to make them alike and the denominator is 90. so 5/9 becomes 50/90 because 9x10=90 so 5x10=50 and 7/30 becomes 21/90 because 30x3=90 and 7x3=21. When you add them, you get 71/90. This fraction cannot be simplified inot lower terms.
2007-05-07 15:42:26 · answer #3 · answered by ♥.♦.Invisible.♦.♥ 2 · 0⤊ 1⤋
The common denominator is 9*30=270
(5*30 + 7*9)/270
(150 + 63)/270 = 213/270 = 0.789
.
2007-05-07 15:34:58 · answer #4 · answered by Robert L 7 · 0⤊ 1⤋
Make 90 the common denominator:
50/90+21/90=
71/90
2007-05-07 15:32:59 · answer #5 · answered by Anonymous · 1⤊ 1⤋
(5 / 9) + (7 / 30) = 0.788888889
hmm, not sure about that actually.
2007-05-07 15:32:53 · answer #6 · answered by Anonymous · 1⤊ 1⤋
71/90
2007-05-07 15:35:44 · answer #7 · answered by HP Fan 2 · 0⤊ 1⤋
71/90
2007-05-07 15:34:30 · answer #8 · answered by CJK1966 2 · 1⤊ 1⤋
71/90
2007-05-07 15:32:41 · answer #9 · answered by darkphoenix37811 2 · 1⤊ 1⤋
71/90
2007-05-07 15:32:11 · answer #10 · answered by dr schmitty 7 · 2⤊ 1⤋