We are given the following problem
[tex]\frac{3}{8}\div\frac{5}{8}[/tex]Recall the reciprocal rule of division method.
"Multiply the dividend by the reciprocal of the divisor"
[tex]\frac{3}{8}\div\frac{5}{8}=\frac{3}{8}\times\frac{8}{5}=\frac{3}{5}[/tex]In other words, invert the divisor and multiply with the dividend.
Therefore, the result is 3/5
We are given the following problem
[tex]3x+5x[/tex]As you can see, the base of the two numbers is the same (x) so we can simply add the coefficients together.
[tex]3x+5x=(3+5)x=8x[/tex]Therefore, the result is 8x
