1) 7/8p - 4 = 10
7/8p - 4 + 4 = 10 + 4
7/8p =14
0.875p = 14
0.875p/0.875 = 14/0.875
p=16
did i do it right?
2007-09-30 10:39:36 · 4 answers · asked by aran_valla 2 in Science & Mathematics ➔ Mathematics
Yes, perfect, as long as the 7/8p is 7/8s of p, rather than 7 divided by 8p. Then you're all screwed up
2007-09-30 10:43:01 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Another method
7/8p - 4 = 10
Transpose 4
7/8p - 4 + 4 = 10 + 4
Collect like terms
7/8p = 14
Multiply both sides of the equation by 8
8(7/8p) = 8(14)
7p = 112
Divide both sides of the equation by 7
7p / 7 = 112 / 7
p = 112 / 7
p = 16
- - - - - - -s-
2007-09-30 10:49:14 · answer #2 · answered by SAMUEL D 7 · 0⤊ 0⤋
Yes, you working and answer are fine. However, instead of converting the fraction to a decimal, you can just ,multiply boths sides by the inverse fraction (8/7). You get (8*14)/7 = 112/7 = 16.
2007-09-30 10:47:20 · answer #3 · answered by skibz26 4 · 0⤊ 0⤋
yes, but it would have been easier if you had multiplied both sides by 8/7 instead of converting to a decimal.
2007-09-30 10:43:16 · answer #4 · answered by chasrmck 6 · 0⤊ 0⤋