How do you solve $-3(x+3)>7.5$ ?

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Answer 1 · 2016-04-09T14:08:05

$=>x< -1/2$

Straight away let’s get rid of the decimal.

Multiply both sides by 10

$-30(x+3)>75$

Divide both sides by 30

$-(x+3)>75/30$

Multiply both sides by (-1) . Note that this turns the inequality round the other way

$+(x+3)<75/30$

Subtract 3 from both sides

$x<75/30-3$

$=>x< -1/2$

How do you solve -3(x+3)>7.5-3(x+3)>7.5?