2007-09-07 09:47:38 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
7x - 5 is answer
2007-09-09 23:31:05 · answer #1 · answered by Como 7 · 2⤊ 0⤋
Combining like terms is very simple. It is no different than simple addition and subtraction. You can only combine terms that have the same variable, eg: x,y,z,a,b,c, etc.
Whatever sign is in front of the number determines if it is positive or negative. So in this case: 3x+2+4x-7 , the 3 is positive, the 2 is positive, the 4 is positive and the 7 is negative.
You can rearrange the problem like this:
3x+4x+2+(-7)
Solve the problem now:
7x - 5
Hope this helps! PM me if you have anymore questions!
2007-09-07 16:52:02 · answer #2 · answered by Brad 2 · 0⤊ 0⤋
(3+4)x+2-7 =7x - 5
2007-09-07 16:55:41 · answer #3 · answered by just4 2 · 0⤊ 0⤋
5/7...3x+2+4x=7, therefore 3x+4x=5, therefore 7x=5, therefore x=5/7
2007-09-07 16:55:55 · answer #4 · answered by Brian M 1 · 0⤊ 0⤋
put 3x and 4x together = 7x
put +2 -7 = -5
so now you have
7x - 5
2007-09-07 16:55:25 · answer #5 · answered by happygolucky13 2 · 0⤊ 0⤋
7x-5
2007-09-07 16:56:16 · answer #6 · answered by Anonymous · 0⤊ 0⤋
7x-5
2007-09-07 16:54:47 · answer #7 · answered by Æ 3 · 0⤊ 0⤋
i think thats 7x-5
2007-09-07 16:55:06 · answer #8 · answered by Anonymous · 0⤊ 0⤋
you want it answered?
7x - 5
2007-09-07 16:54:59 · answer #9 · answered by blowers.daughter. 2 · 0⤊ 0⤋