IDNLearn.com makes it easy to get reliable answers from experts and enthusiasts alike. Ask your questions and receive reliable, detailed answers from our dedicated community of experts.

Solve the inequality and find the correct range for [tex]\( x \)[/tex]:

[tex]\[
\frac{1}{3} x + 1 \frac{2}{3} \ \textless \ -\frac{3}{4} x - \frac{1}{2}
\][/tex]


Sagot :

Sure, let's solve the inequality step by step:

We start with the given inequality:
[tex]\[ \frac{1}{3} x + \frac{5}{3} < -\frac{3}{4} x - \frac{1}{2} \][/tex]

First, we want to clear the fractions by finding a common multiple. In this case, the least common multiple (LCM) of the denominators (3 and 4) is 12. We multiply each term by 12:

[tex]\[ 12 \cdot \left( \frac{1}{3}x \right) + 12 \cdot \left( \frac{5}{3} \right) < 12 \cdot \left( -\frac{3}{4}x \right) + 12 \cdot \left( -\frac{1}{2} \right) \][/tex]

This simplifies to:

[tex]\[ 4x + 20 < -9x - 6 \][/tex]

Next, we want to isolate [tex]\( x \)[/tex]. Begin by getting all terms involving [tex]\( x \)[/tex] on one side of the inequality and the constant terms on the other side. To do this, add [tex]\( 9x \)[/tex] to both sides:

[tex]\[ 4x + 9x + 20 < -9x + 9x - 6 \][/tex]

This simplifies to:

[tex]\[ 13x + 20 < -6 \][/tex]

Now, isolate [tex]\( x \)[/tex] by subtracting 20 from both sides:

[tex]\[ 13x + 20 - 20 < -6 - 20 \][/tex]

This simplifies to:

[tex]\[ 13x < -26 \][/tex]

Now, solve for [tex]\( x \)[/tex] by dividing both sides by 13:

[tex]\[ x < -2 \][/tex]

Hence, the solution to the inequality [tex]\(\frac{1}{3} x+ \frac{5}{3} < -\frac{3}{4} x-\frac{1}{2}\)[/tex] is:

[tex]\[ x < -2 \][/tex]

In interval notation, this means:

[tex]\[ (-\infty, -2) \][/tex]