$=$ is equa $\dfrac {4\dfrac {1} {7}-2\dfrac {1} {4}} {3\dfrac {1} {2}+1\dfrac {1} {7}}+$ $2$ $1$ $1$ $1$ $2\bar{2+\dfrac {1} {5-\dfrac {1} {5}}} $

Using the the reariangement frfenty $+$ $-$ - 16 $t$ it 14 21 28

$-7$ $2x^{2}+117\left(+\left(5$ $=$