Answer:
x = 20
Step-by-step explanation:
Turn all the numbers into fractions with the same denominator.
[tex]6.75 = \frac{46}{8}[/tex]
[tex]13\frac{1}{4} = \frac{53}{4}[/tex] × [tex]\frac{2}{2} = \frac{106}{8}[/tex]
[tex]\frac{46}{8} + \frac{3}{8}x = \frac{106}{8}[/tex]
Subtract 6.75 from both sides
[tex]\frac{3}{8}x = \frac{60}{8}[/tex]
Then multiply both sides by 8
[tex]3x = 60[/tex]
Then divide both sides by 3 to get x
[tex]\frac{3x}{3} = \frac{60}{3}[/tex]
