$86\cdot7$

$5\left(-4+7d\right)$

$-\left(-458\right)-\left(-67\right)-\left(+796\right)-\left(+37\right)-\left(+897\right)-\left(-7632\right)$

$-\frac{3}{5}ab^3d^2\left(-5ab^2d^5-5ab\right)$

$3\sqrt{5^{4}}$

$\sin\left(2x\right)\cdot\cos\left(x\right)=2\cdot\sin^3\left(x\right)$

$\frac{1}{3x-2}\le4$