what is -7<3-2x<13
2007-12-05 08:38:16 · 3 answers · asked by Brittney M 1 in Science & Mathematics ➔ Mathematics
3 - 2x < 13
- 2x < 10
2x > - 10
x > - 5
3 - 2x > - 7
- 2x > - 10
2x < 10
x < 5
Required region is: -
- 5 < x < 5
2007-12-05 09:48:30 · answer #1 · answered by Como 7 · 2⤊ 1⤋
-7 < 3 - 2x < 13
add 7 to -7 and 13
3 - 2x < 20
subtract 3 to 3 and 20
-2x < 17
divide by -2 to -2x and 17. Switch sign
x > -8.5
2007-12-05 16:44:57 · answer #2 · answered by Anonymous · 1⤊ 1⤋
-7<3-2x<13
add -3 to all three parts
-10 < -2x < 10
take the opposite of all three parts, reversing the inequality signs
10 > 2x > -10
reverse the entire inequality so it is < instead of >
-10 < 2x < 10
divide all three parts by 2
-5 < x < 5
2007-12-05 16:41:29 · answer #3 · answered by ben e 7 · 1⤊ 1⤋