2006-10-15 11:44:00 · 6 answers · asked by Swede258 1 in Education & Reference ➔ Homework Help
First you have to get rid of your parentheses. In the order of operations, everything inside parentheses gets done first.
-x-(13+4x)=-3(5-9x)+2
-x-13-4x= -15+27x+2
-5x-13=27x-13
-32x=0
x=0
Now we plug in our answer to see if it's mathematically correct.
-x-(13+4x)=-3(5-9x)+2
-0-(13+0)= -3(5-0)+2
-13= -15+2
-13= -13
So we know that zero is our answer.
2006-10-15 13:48:13 · answer #1 · answered by Bastet's kitten 6 · 0⤊ 0⤋
Multiply out and get all the x terms on one side to solve for x.
-x - (13 + 4x) = -3(5 - 9x) + 2
-x -13 - 4x = -15 + 27x + 2
I think the rest of the problem you should be able to work out for yourself. The tricky part was what to do with the negative in front of (13+4x) and the -3 in front of (5-9x).
Good luck kiddo!
2006-10-15 18:45:24 · answer #2 · answered by dualspace 3 · 0⤊ 0⤋
-x - (13+4x) = -3(5-9x) + 2
-x -13- 4x = -15 +27x +2 <<< Multiply everything through.
-x -4x -13 = 27x -15 +2 <<< Group like terms together.
-5x -13 = 27x - 13 <<< Add like terms.
-13 = 32x - 13 <<< Add 5x to both sides.
0 = 32x <<< Add 13 to both sides.
0 = x <<< Divide both sides by 32.
2006-10-15 20:21:54 · answer #3 · answered by mizzdorkyangel 2 · 0⤊ 0⤋
-x-13-4x=-15+27x
-5x-13=-15+27x
+5x +5x
-13=-15+32x
+15 +15
2=32x
1/16=x
2006-10-15 18:55:22 · answer #4 · answered by ... 6 · 0⤊ 0⤋
-x-(13+4x)=-3(5-9x)+2
3x-13=-15+27x+2
3x-13= -15+29
3x=14+13
3x/3=27/3
x=9
2006-10-15 18:51:53 · answer #5 · answered by ? 5 · 0⤊ 0⤋
-x-13-4x=-15+27x+2
-32x=2
x=-1/16
2006-10-15 18:46:46 · answer #6 · answered by raj 7 · 0⤊ 1⤋