Question

perform the following:-1/3 + 6/715/16 - 3/47/6x + -4/3y

Answer 1

SOLUTION

$\begin{gathered} a\text{. }\frac{-1}{3}\text{ + }\frac{6}{7} \\ \\ \frac{-7+18}{21} \\ \\ \frac{11}{21} \end{gathered}$

b.

$\begin{gathered} \frac{15}{16}-\frac{3}{4} \\ \\ \frac{15-12}{16} \\ \\ \frac{3}{16} \end{gathered}$

c.

$\begin{gathered} \frac{7}{6x}+\frac{-4}{3y} \\ \\ \frac{7y-8x}{6xy} \end{gathered}$

So we just have to find the LCM of the denominators, then we perform the rule of addition of fraction