I know how to do it but i dont know how to do it with fractions. like what would i have to do to slove
28=p/7 (p/7 is the fraction. p is the numerator and 7 is the denominater)
2007-01-31 12:48:21 · 7 answers · asked by The REBELution! 3 in Science & Mathematics ➔ Mathematics
p/7 = 28
multiply both sides by 7
7p/7 = 28*7
7p/7 = 196
the two 7's cancel each other out
p = 196.
2007-01-31 13:20:13 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Think of a number (p) such that when you divide it by 7 you get 28. When you have a fraction on one side of the equation, all you have to do is to multiply BOTH sides of the equation by whatever is in the denominator. So to solve this equation, we can multiply both sides by 7. That gives us 28 (7) = (7) (p/7).
... but then we can rearrange the right side and get (7/7)p = 1p ... so p is just equal to 28(7).
2007-01-31 20:55:06 · answer #2 · answered by koolkat 3 · 0⤊ 0⤋
Multiply both sides by 7 to get p by itself and multiply 28 x 7= 196
2007-01-31 21:24:19 · answer #3 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
p = 28*7 = 196
2007-01-31 20:51:29 · answer #4 · answered by Michael Dino C 4 · 0⤊ 0⤋
u take 28 times 7 which = 196
to check take 196/7=28
2007-01-31 21:01:17 · answer #5 · answered by peanut butter 1 · 0⤊ 0⤋
28=p/7 multiply both sides by 7
28*7=p*7/7
196=p or
p=196
2007-01-31 21:38:23 · answer #6 · answered by yupchagee 7 · 0⤊ 0⤋
You don't like a denominator on one side of your equation, so get rid of it by multiplying both sides of the equation by the denominator. Then you will have a simple-to-solve equation.
2007-01-31 20:54:08 · answer #7 · answered by foxvalley 2 · 1⤊ 0⤋