Question

Solve - 5 < 4x + 3 < 7.

Answer 1

-2 < x <1

Explanation:

To the original inequality,

1. Subtract 3 everywhere

- 5 - 3 < 4x + 3 - 3 < 7 - 3

==> -8 < 4x < 4

2. Divide entire inequality by 4
==> -8/4 < 4x /4 < 4/4

=> -2 < x < 1