If x < 7, then: - Vidyadip

MCQ

If x < 7, then:

A
$-\text{x}<-7$
B
$-\text{x}\leq-7$
✓
$-\text{x}>-7$
D
$-\text{x}\geq-7$

✓

Answer

Correct option: C.

$-\text{x}>-7$

x < 7
subtracting x on both sides, we get
⇒ x − x < 7 − x
⇒ 0 < 7 − x
subtracting 7 on both sides, we get
⇒ 0 − 7 < 7 − x − 7
⇒ −7 < − x
⇒ − x > −7

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