help me!!!!!
2006-11-01 16:19:30 · 4 answers · asked by dest s 1 in Science & Mathematics ➔ Mathematics
-7=9+(-8x) Subtract 9 from both sides
-16=-8x Divid both sides by -8
x=2
2006-11-01 16:23:03 · answer #1 · answered by futureastronaut1 3 · 0⤊ 0⤋
Solution
-8x+9=-7
-8x=-7-9
-8x=-16
x=2
Checking
-8(2)+9=-7
-16+9=-7
-7=-7: Correct
2006-11-02 01:17:24 · answer #2 · answered by musiclover2008 3 · 1⤊ 0⤋
-8x + 9 = - 7
- 8x + 9 - 9 = - 7 - 9
- 8x = - 16
- 8x/-8 = -16/-8
x = 2
The answer is x = 2
Insert the x value into the equatio
- - - - - - - - - - - - - - - - - - - - - -
Check
- 8x + 9 = - 7
- 8(2) + 9 = - 7
- 16 + 9 = - 7
- 7 = - 7
- - - - - - - s-
2006-11-02 04:23:49 · answer #3 · answered by SAMUEL D 7 · 1⤊ 0⤋
The number is your variable, so let's define that as x.
Reading the question literally, you get:
-8x + 9 = -7
Solve for x:
-8x = -16
x = 2
2006-11-02 00:22:34 · answer #4 · answered by Rev Kev 5 · 0⤊ 0⤋