$3\sin\left(y\right)\cos\left(y\right)=2\sin\left(y\right)$

$\arcsin\left(2-1\right)$

$\left(1.2\right)\left(2\right)^{-1}$

$\:t\left(x\right)=9\:ln\:x+7$

$-3+\left(-4-\left(-26\right)\right)\cdot\left(+2\right)$

$\int ex\ln\left(x\right)dx$

$\left(x+9xy^4\right)dx+e^{x^2}y^3dy=0$