how would i solve this but turn it into an equation first?
The sum of four times a number and 17 is equal to the sum of seven times the same number and 2. ??? h.e.l.p. please
2007-02-07 16:51:39 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
easy.
4x+17=7x+2
so, subtract 4x from both sides and subtract the 2 from both sides to get
15=3x
divide both sides by 3 and you get
x=5
2007-02-07 16:57:20 · answer #1 · answered by halfahyphen123 1 · 0⤊ 0⤋
X * 4 + 17 = X * 7 + 2
2007-02-07 16:55:40 · answer #2 · answered by Anonymous · 0⤊ 0⤋
let x be the number
4x = four times a number
7x = seven times the number
4x + 17 = 7x + 2 combine similar terms
4x - 7x = 2 - 17
-3x = -15 divide by -3
x = 5 // answer
2007-02-07 16:59:23 · answer #3 · answered by 13angus13 3 · 0⤊ 0⤋
Let x = number
4x + 17 = 7x +2
15 = 3x
x = 5
2007-02-07 17:00:36 · answer #4 · answered by Brian F 4 · 0⤊ 0⤋
I'd give the number a symbol to represent it's value. Say φ. Now the problem says that
4*φ+17 = 7*φ+2. => φ = 5
and you're all done.
Doug
2007-02-07 16:58:55 · answer #5 · answered by doug_donaghue 7 · 0⤊ 0⤋
n(4) + 17 = 7n + 2
2007-02-07 16:55:41 · answer #6 · answered by ___________ 4 · 0⤊ 0⤋
If i understand you correctly i get this:
4x+17=7x+2
Do your own basic Algebra next time. The answer is x = 5.
2007-02-07 16:57:59 · answer #7 · answered by Cautiously Optomistic 1 · 0⤊ 0⤋