EDGE Math 8

Perform the indicated operations and simplify the resulting expression. Choose the correct answer.

1.	$\frac{x - 3}{8} + \frac{x + 4}{6}$

\frac{7 x - 25}{24}

\frac{7 x + 7}{24}

\frac{7 (x + 1)}{24}

none of the choices

Answer: $\frac{7 (x + 1)}{24}$

2.	$\frac{x + 6}{12} + \frac{x - 2}{36}$

\frac{x + 4}{9}

\frac{4 x + 16}{36}

\frac{x + 5}{9}

none of the choices

Answer: $\frac{x + 4}{9}$

3.	$\frac{m - 4}{12} - \frac{10 m}{25}$

- \frac{19 m + 20}{60}

- \frac{95 m - 100}{300}

\frac{- m - 1}{3}

none of the choices

Answer: $- \frac{19 m + 20}{60}$

4.	$\frac{y + 8}{7} - \frac{y - 4}{8}$

\frac{y + 92}{56}

\frac{y - 92}{56}

\frac{15 y - 92}{56}

none of the choices

Answer: $\frac{y + 92}{56}$

5.	$\frac{3 x - 2}{x^{2}} + \frac{2 x - 1}{x^{3}}$

\frac{3 x^{2} - 4 x - 1}{x^{3}}

\frac{3 x - 1}{x^{2}}

\frac{3 x^{2} - 1}{x^{3}}

none of the choices

Answer: $\frac{3 x^{2} - 1}{x^{3}}$

6.	$\frac{5 y + 1}{2 y^{2}} + \frac{3 y - 4}{4 y^{3}}$

\frac{10 y^{2} + 5 y - 4}{4 y^{3}}

\frac{10 y^{2} + y - 4}{4 y^{3}}

\frac{10 y^{2} - y - 4}{4 y^{3}}

none of the choices

Answer: $\frac{10 y^{2} + 5 y - 4}{4 y^{3}}$

/ 6