-9(6+x)-2x= -10
+9 +9
(6+x)-2x= -1
-6 -6
x-2x= -7
3x= -7
3x/3 -7/3
x= -2.3
is this right?
im not suree
please help =]
2007-10-04 12:47:23 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
yeahh so im in algebra 1
just in case any1 was wonderinn
2007-10-04 12:55:23 · update #1
No, this is wrong. The -9 on the left is not being added to the stuff inside the bracket, it is being multiplied by it, so you can't get rid of it by adding 9 to both sides.
Multiply out the bracket first, collect like terms and then simplify:
-9 (6 + x) - 2x = -10
<=> -54 - 9x - 2x = -10
<=> -9x - 2x = -10 + 54
<=> -11x = 44
<=> x = -44/11 = -4.
2007-10-04 12:53:00 · answer #1 · answered by Scarlet Manuka 7 · 1⤊ 0⤋
yes! but i did i differently. the first step is to distribute to get rid of the parentheses. add the like terms and the rest is easy! good luck
2007-10-04 19:53:04 · answer #2 · answered by ss 2 · 0⤊ 1⤋
you fogot to distribute and its wrong try again, im in algebra 1
2007-10-04 19:51:57 · answer #3 · answered by Anonymous · 0⤊ 1⤋
It's been a while, but isn't x-2x...-1x?
2007-10-04 19:58:27 · answer #4 · answered by bored. 3 · 0⤊ 1⤋