Find n:
n- 13/15= 19/30
2007-01-21 16:47:39 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Take the 13/15 over to the other side:
n = 19/30 + 13/15
Now apply a common denominator of 30 = 15*2:
n = 19/30 + (13*2)/(15*2)
= 19/30 + 26/30
= (19 + 26) / 30
= 45 / 30
Now factorise and cancel common factors:
= 3(15) / 2(15)
= 3/2.
2007-01-21 16:51:07 · answer #1 · answered by Scarlet Manuka 7 · 0⤊ 0⤋
n - 13/15 = 19/30
n=19/30 + 13/15 find common denominator which is 30
n= 19/30 + 26/30
n= 45/30 or 1 1/2
2007-01-22 00:52:19 · answer #2 · answered by alcontch 3 · 0⤊ 0⤋
n- 13/15= 19/30 add 13/15 to each side
n=19/30+13/15 find LCD
n=19/30+26/30=45/30
n=3/2=1.5
2007-01-22 00:50:37 · answer #3 · answered by yupchagee 7 · 0⤊ 0⤋
n-13/15=19/30
n=19/30+13/15
n=19/30+26/30
n=45/30
n=3/2
2007-01-22 00:50:59 · answer #4 · answered by andru 2 · 0⤊ 0⤋