Use Properties of equality and numbers to solve each each equation x.
7+3x=5x+13
2007-12-03 17:00:28 · 12 answers · asked by Anonymous in Society & Culture ➔ Other - Society & Culture
looks like u ve the answer already..think a little..
2007-12-03 17:03:53 · answer #1 · answered by Sid 3 · 1⤊ 0⤋
7+3x=5x+13
7 + 3x - 3x =5x -3x +13
7=2x+13
7 -13 = 2x +13-13
-6=2x
-6/2 =2x/2
-3=x
I'm a freaking genius!!!!!
just remember every time you do an operation on one side of the equation, you have to do it to the other side too. That's why its called an equation.
2007-12-04 01:05:49 · answer #2 · answered by Anonymous · 0⤊ 1⤋
OK, first get rid of as many numbers as you can.
So, for the 7 and thirteen, eliminate 7 from each side, leaving 0 and 6.
Now you have 3x = 5x+ 6.
Now get rid of some of the rest, so you get rid of 3 on each side. So it becomes x = 2x + 6.
So x must be a negative number, right? I think you can figure it out from there.
2007-12-04 01:06:40 · answer #3 · answered by Katherine W 7 · 0⤊ 2⤋
7+3x=5x+13
-3x -3x
7= 2x+13
-13 -13
-6=2x
-3=x
x=-3
2007-12-04 01:05:01 · answer #4 · answered by steve 2 · 2⤊ 0⤋
x= -3 because you subtract 3x on both sides so u get
7=2x + 13
then subtract 13 on both sides to get:
-6 =2x
divide by 2
x=-3
2007-12-04 01:05:02 · answer #5 · answered by Earlaz_F-town_girl 1 · 0⤊ 1⤋
7-13=5x-3x
-6=2x
x=-6/2
x= -3
2007-12-04 01:03:50 · answer #6 · answered by kim 2 · 0⤊ 2⤋
7+3x=5x+13
8x=6
x=6/8
x=3/4
2007-12-04 01:04:48 · answer #7 · answered by Dreamer 2 · 0⤊ 3⤋
7+3x=5x+13
-7_______ -7
3x=5x+6
-5x_-5x__
-2x=6
Divide both sides by -2
x=-3
2007-12-04 01:03:26 · answer #8 · answered by sestrickland2009 1 · 0⤊ 2⤋
the answer is -3
(negative 3)
2007-12-04 01:04:17 · answer #9 · answered by Kurt H™ FC Steaua Bucureşti 3 · 0⤊ 1⤋
No..sorry Calculators are great i hear
2007-12-04 01:03:29 · answer #10 · answered by Brandon 3 · 2⤊ 0⤋