The verbal problem is "7 times a number is the same as 12 more than 3 times the number. Find the number."
I know that the equation is
7x=3y+12
but how do you solve it?
Could you show me in steps please? Thanks!
2007-10-21 05:27:50 · 8 answers · asked by <3 2 in Science & Mathematics ➔ Mathematics
HA no wonder it was impossible.
It's x, not y.
Thanks for the help everyone!
2007-10-21 05:52:21 · update #1
Let number = x
7x = 3x + 12
4x = 12
x = 3
Number is 3
2007-10-28 07:40:28 · answer #1 · answered by Como 7 · 1⤊ 0⤋
I think the equation is
7x = 3x+ 12
=> x =3
2007-10-21 12:32:58 · answer #2 · answered by namvt2000 6 · 0⤊ 1⤋
Firstly, note that 7 times a number and 3 times the number are the same number. So, assuming n is the number:
7n = 12 + 3n
First step is to get 3n on the other side.
4n = 12
Just divide by 4 now to get 3.
n = 3
There! n = 3.
2007-10-21 12:35:51 · answer #3 · answered by Anonymous · 0⤊ 0⤋
I don't think thats y...because thats impossible to solve.
I think that the equation acually is:
7x=12+3x the reason is because its the same number, which is x
this is how u solve it
7x=12+3x
4x=12
x=3
I hope that helps you!
2007-10-21 12:36:39 · answer #4 · answered by Anonymous · 0⤊ 0⤋
u wrtie as 7x=12+3x....then you move the 3x under the 7x and subtract so u get 4x and 4 divided by 12= 3 so ur answer is 3
2007-10-21 12:37:16 · answer #5 · answered by anabananaz41592 2 · 0⤊ 0⤋
No you have it wrong, it should be 7x=3x+12, so rewriting the equation, you have 7x-3x=12, or 4x=12, so x=3 [ans.]
2007-10-21 12:38:03 · answer #6 · answered by WC 7 · 0⤊ 1⤋
you should write it as 7x =3x +12, solve that
2007-10-21 12:32:30 · answer #7 · answered by Any day 6 · 1⤊ 0⤋
start with 7x=3x+12
then you subtract 3x from both sides to get:
4x=12
then you divide 4 from both sides to get:
x=3
2007-10-21 12:35:49 · answer #8 · answered by pinoypride333 3 · 0⤊ 0⤋