2007-04-02 02:14:39 · 8 answers · asked by reuben h 1 in Science & Mathematics ➔ Mathematics
There are two solutions to the problem. They are 7 and 23. Both prime numbers. Since you didn't specify if the number is bigger or smaller, they are both correct.
2007-04-02 02:19:16 · answer #1 · answered by misoma5 7 · 2⤊ 0⤋
The number 15-8=7
2007-04-02 09:28:15 · answer #2 · answered by Vinu 3 · 0⤊ 0⤋
The difference would be 15-8 which is 7.
2007-04-02 09:18:01 · answer #3 · answered by peateargryfin 5 · 1⤊ 0⤋
If you want to find out the number, you have to let the number be x and write the solution like this.
15-x=8
x=15-8
x=7
2007-04-02 09:37:43 · answer #4 · answered by laughoutloud :D 2 · 0⤊ 0⤋
"Difference" means subtraction. You know that 15 and an unknown number (the variable, which we'll call "x") is part of that equation. "Is" always means "equal to". So, to find the answer, you'll need to use this algebraic equation:
15 - x = 8
You need to isolate x, so you'll need to subtract 15 from both sides. Then, you're going to have a negative x, but you want to know the value of positive x. For that reason, you'll need to multiply both sides by a negative one (basically, this means that you will eliminate the negative signs). Then you will have the value of x!
2007-04-02 09:21:31 · answer #5 · answered by Anonymous · 0⤊ 0⤋
x - 15 = 8
x - 15 + 15 = 8 + 15
x = 23
The number is 23
23 - 15 = 8
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2007-04-02 09:58:59 · answer #6 · answered by SAMUEL D 7 · 0⤊ 0⤋
if u dont know this., how will u work out for higher level problems
2007-04-02 09:23:51 · answer #7 · answered by abcd_123 2 · 0⤊ 0⤋
7
Please give me best answer thanks!
2007-04-02 11:05:48 · answer #8 · answered by Anonymous · 0⤊ 0⤋