2006-10-27 02:18:12 · 24 answers · asked by sue w 2 in Science & Mathematics ➔ Mathematics
-x-3=7 so... you bring -3 to the other side of the = sign... so it becomes +3... so you get...
-x=10
you never want a negative x so you switch it around to give you
x=-10
Basically, to solve any equasion with numbers and algebra you want to get all the x on one side of the = and all the values on the other side untill you reach a point where the missing value has a value.. To check, substitute in the value and see if it is equal.
Hope this helps :)
2006-10-27 02:35:16 · answer #1 · answered by stardom 2 · 1⤊ 0⤋
1. If -x-3=7 then -x=10 so x=-10
2. If 9x-6=8 then 9x = 14 so x=14/9
2006-10-27 02:54:15 · answer #2 · answered by Ben W 1 · 0⤊ 0⤋
X=-10 and X=1 5/9
2006-10-27 02:26:03 · answer #3 · answered by The Puerto Rican Prince 2 · 0⤊ 0⤋
-x - 3 =7 <=> x= -3-7 = -10
9x - 6 = 8 <=> 9x = 8+6 <=> x = 14/9
2006-10-27 02:22:50 · answer #4 · answered by James Chan 4 · 0⤊ 0⤋
-x-3=7>>>>>x= -3-7 = -10
9x-6 =8>>>9x = 8+6=14
>>>>>>>>>x= 14/9
i hope that this helps
2006-10-27 03:51:48 · answer #5 · answered by Anonymous · 0⤊ 0⤋
-x-3=7
bring the 3 over and add
-x= 10
now take the - from the x and put it on the 10
x=-10
9x-6=8
add the 6 to the other side
9x=14
divide 14 by 9
x=1.5555
2006-10-27 02:44:58 · answer #6 · answered by nicole 2 · 0⤊ 0⤋
Isolate the variable to one side of the equation:
-x -3 +3 = 7+3
-x = 10
x= -10
________
9x-6+6=8+6
9x=14
x=14/9
2006-10-27 02:21:50 · answer #7 · answered by Jenelle 3 · 1⤊ 0⤋
a million. 5 2.40 8 3. 947>5x-2 4. 904 5. a million-2/4 6.7x(fifty seven*2)/4 7. 80 5 8. same as #2 9. y=4n in basic terms Kidding, Iv'e been out of school for 21 years, i did not like homework and checks then and that i absolutely do not wanna do them now. lol effective attempt although! good luck
2016-12-05 07:01:27 · answer #8 · answered by ? 4 · 0⤊ 0⤋
-x-3=7
-x=7+3
x=-10
9x-6=8
9x=8+6
9x=14
x=14/9
x=1 5/9
2006-10-27 02:29:19 · answer #9 · answered by Anonymous · 0⤊ 0⤋
-x-3 =7 therefore x = -10
9x-6=8 therefore x= 14/9
2006-10-27 02:27:54 · answer #10 · answered by ric0305 1 · 0⤊ 0⤋