How do you solve the inequality -3x< -6 or x + 5<= -2 ?

1 Answer
May 18, 2017

See explanation

Explanation:

Given:

-3x<-6" ".............Equation(1)
x+5<=-2" "............Equation(2)

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color(blue)("Consider "Equation(1))

Multiply both sides by (-1) to make the x term positive.

This action reverses the inequality sign as well as changing the signs.:

+3x>+6

Divide both sides by 3

x>6/3

color(green)(x>2" "................Equation(1_a))

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color(blue)("Consider "Equation(2))

Subtract 5 from both sides

color(green)(x<=-7" "...................Equation(2_a))
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If you were to combine these you would have

2 < x <= -7

Tony B