Question

Solve -3 < 2x + 9 < 6.

Answer 1

well...we have two cases here

Answer 2

-3<2x+9 and 2x+9<6

Answer 3

now is it easier to solve?

Answer 4

i think its easier to solve it simultaneously without splitting

Answer 5

its the same as "onesided" stuff; you just work from the middle out and balance the outsides

Answer 6

No? lets break it down a bit more?

Answer 7

the thing rsad said :)

Answer 8

ya

Answer 9

-3 < 2x + 9 < 6

you need to isolate x
begin with subtracting 9 through out

Answer 10

so would it be -6 < x < -1.5

Answer 11

-3-9 < 2x + 9-9 < 6-9
-12 < 2x < -3

then divide by 2

Answer 12

you have it !! correct... very good work :)

Answer 13

thanks so much

Answer 14

np :)