3 years ago

3<3x+6<24i keep getting 1 < x < 6but the answer says -1 < x < 6

1 answer:

lara [203]3 years ago

6 0

3 < 3x+6
-3<3x
-1<x

3x+6<24
3x<18
x<6

-1<x<6 the book is right

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