i need someone to explain step by step how to solve this problem. I already have the answer to it, i just don't understand it. Thanks!
2007-11-06 08:17:48 · 5 answers · asked by shawna 2 in Science & Mathematics ➔ Mathematics
Multiply everything by 7 and you get x-7x=-28, so -6x=-28, and divide by -6 both sides. x=14/3
2007-11-06 08:24:38 · answer #1 · answered by tydvdtalk 3 · 0⤊ 0⤋
x/7 - x = -4
Multiply both sides by 7 to clear the denominator from the fraction
7(x/7 - x) = 7(-4)
x - 7x = - 28
-6x = - 28
x = 28/6 = 14/3
2007-11-06 16:22:29 · answer #2 · answered by kindricko 7 · 0⤊ 0⤋
x/7 - x = -4
Multiply both sides by 7, getting
x-7x=-28
-6x = -28
x = 28/6 = 14/3 = 4 2/3
2007-11-06 16:22:21 · answer #3 · answered by ironduke8159 7 · 0⤊ 0⤋
I'm assuming that the big X and the little x are the same variable.
x/7 - x = -4
x/7 is the same as (1/7)x
1/7(x) - x = -4
x can be (7/7)x 7/7 is 1
1/7x - 7/7x equals -6/7x
(-6/7)x = -4
x = -4(-7/6)
x = -2(-7/3)
x = 14/3
or x = 4 2/3
2007-11-06 16:27:14 · answer #4 · answered by Randy C 2 · 0⤊ 0⤋
x/7 - x = -4
Multiply both sides by 7
7(x/7 - x) = -4 * 7
x - 7x = -28
-6x = -28
6x = 28
x = 28/6
x = 14/3
2007-11-06 16:22:33 · answer #5 · answered by ib 4 · 0⤊ 0⤋