Solve the Equation $\frac { 1 } { x + 7 } + \frac { 5 } { x + 6 } = \frac { - 1 } { x ^ { 2 } + 13 x + 42 }$

Q43: Simplify the rational expression.<br>- <span class="ql-formula"

Q44: Simplify the rational expression.<br>- <span class="ql-formula"

Q45: Simplify.<br>- <span class="ql-formula" data-value="\frac { 1

Q46: Find the product and simplify.<br>- <span

Q47: Solve the equation.<br>- <span class="ql-formula" data-value="\frac

Q49: Given that the pair of triangles

Q50: Simplify.<br>- <span class="ql-formula" data-value="\frac { \frac

Q51: Simplify.<br>- <span class="ql-formula" data-value="\frac { \frac

Q52: Find the product and simplify.<br>- <span

Q53: Solve.<br>-A boat moves 8 kilometers upstream