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FinnZ [79.3K]
3 years ago
8

Solve: -7 < 2x+5 < 7

Mathematics
1 answer:
kondor19780726 [428]3 years ago
4 0

Answer:

- 6 < x < 1

Step-by-step explanation:

first things first:

- 7 < 2x  + 5 \\  - 7 - 5 < 2x  + 5 - 5 \\  - 12 < 2x \\  - 6 < x

now:

2x + 5 < 7 \\ 2x + 5 - 5 < 7 - 5 \\ 2x < 2 \\ x < 1

now the intersection is:

- 6 < x < 1

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