2006-11-14 23:50:46 · 9 answers · asked by Christopher Parker 2 in Science & Mathematics ➔ Mathematics
You can mostly do things to both sides of an inequality in the same way as you do for "=". Main exception is multiplying or dividing both sides by a negative: When you do that you must reverse the direction of the inequality. That's why just browsin gave the answer as x < 1. You divide both sides by -7 and reverse > to get <. You can see this is correct because
putting x = 0.1 gives
-0.7 > -7 which is correct if you think about where these numbers are on the number line.
Putting x = 2 gives -14>-7, which is wrong.
2006-11-14 23:58:37 · answer #1 · answered by Hynton C 3 · 1⤊ 0⤋
X<1
2006-11-15 08:00:28 · answer #2 · answered by Mono Liso 4 · 1⤊ 0⤋
x<1
2006-11-15 10:28:46 · answer #3 · answered by Anonymous · 0⤊ 0⤋
x<1
2006-11-15 07:52:33 · answer #4 · answered by just browsin 6 · 1⤊ 1⤋
multiply -1 to both sides.
when you multiply or divide a negative sign you must change the direction of sign
hence
-1 x -7x>-7
= 7x<7
divive both sides by 7
x<1
2006-11-15 09:47:18 · answer #5 · answered by Anonymous · 1⤊ 0⤋
-7x>-7
dividing by -7
x<1
2006-11-15 07:58:10 · answer #6 · answered by raj 7 · 1⤊ 0⤋
-7x > - 7
- 7x/- 7 < - 7/ - 7
x < 1
The answer is x < 1
- - - - - - -s-
2006-11-15 08:00:39 · answer #7 · answered by SAMUEL D 7 · 1⤊ 0⤋
divide by -7 but Think to CHANGE THE SIGN when dividing by a negative number. You find x > 1
For x>1 the inegality is true
2006-11-15 08:29:11 · answer #8 · answered by maussy 7 · 0⤊ 1⤋
-7x>-7
-7x/-7<-7/-7
x<1
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2006-11-15 08:22:04 · answer #9 · answered by fii 3 · 1⤊ 0⤋