2007-01-31 14:28:44 · 4 answers · asked by ShakeDatLaffyTaffy 2 in Science & Mathematics ➔ Mathematics
5x -2(6-5x)=18
5x-12+10x=18
15x=30
x=2
2007-01-31 14:35:47 · answer #1 · answered by πρ 6 · 0⤊ 0⤋
Factor the (6-5x)...you multiply by -2. Remember, negative times a negative is a positive.
5x-12+10x=18
Add 12 to both sides to remove the -12. Also add the 5x and 10x.
15x=30
Now, divide both sides by 15, to remove the 15 from the x
x=30/15 so x=2
Good luck! :-)
2007-01-31 22:36:23 · answer #2 · answered by Voice_Of_Reason 5 · 0⤊ 0⤋
(5x-2)(6-5x)=18
5x (6-5x)=18
=30x-25x=18
+
-2(6-5x)=18
-12+10x=18
therefore
30x-25x-12+10x=18
=15x-12=18
Going further to solve:
15x-12=18
add the 12 to the other side of the equals sign
15x=30
divide both sides by 15
therefore x=2
2007-01-31 22:36:19 · answer #3 · answered by Anonymous · 0⤊ 1⤋
x = 2
5x -12+ 10x = 18
15x = 30
x = 30/ 15
x =2
2007-01-31 22:33:04 · answer #4 · answered by sup 5 · 0⤊ 1⤋