$\left(3y+7\right)\left(-4y\right)$
$-3\cdot\left(-20\right)$
$\left(-2+x\right)^2+3\left(x^2-2\right)+6\left(1+\frac{2}{3}\right)$
$432\cdot125$
$5+3xy+xy+5$
$3+\frac{2}{1}$
$5x+4y=44$
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