simplifying expressions in inequalities....-6x+22 1/4+2x>9 3/4 +16 1/2......i did this equation but when i plug in the numbers for x, it's false. the answer i got on the inequality is x<-1​

Respuesta :

Answer:

[tex]x < -3\frac{3}{4}[/tex]

Step-by-step explanation:

Given

[tex]-6x+22\frac{1}{4}+2x &gt; 9\frac{3}{4} +16\frac{1}{2}[/tex]

Required

Solve for x

[tex]-6x+22\frac{1}{4}+2x &gt; 9\frac{3}{4} +16\frac{1}{2}[/tex]

Collect Like Terms

[tex]-6x+2x &gt; 9\frac{3}{4} +16\frac{1}{2}-22\frac{1}{4}[/tex]

[tex]-4x &gt; 9\frac{3}{4} +16\frac{1}{2}-22\frac{1}{4}[/tex]

Convert all fractions to improper fractions

[tex]-4x &gt; \frac{39}{4} +\frac{33}{2}-\frac{45}{4}[/tex]

Take LCM

[tex]-4x &gt; \frac{39+66- 45}{4}[/tex]

[tex]-4x &gt; \frac{60}{4}[/tex]

[tex]-4x &gt; 15[/tex]

Divide through by -4; When an inequality is divided by a negative number, the inequality changes.

[tex]\frac{-4x}{-4} &lt; \frac{15}{-4}[/tex]

[tex]x &lt; \frac{15}{-4}[/tex]

[tex]x &lt; -\frac{15}{4}[/tex]

Convert to improper fraction

[tex]x < -3\frac{3}{4}[/tex]