$$3y\:-\:2\:=\:9y\:+\:22$$

$$\lim_{x\to0}\left(\frac{3\cdot\left(-\sin\left(2x\right)\right)}{x^2}\right)$$

$$2+3+4-3-5+3-4+2-4+3$$

$$\left(-4a-10b\right)\left(-4a+10b\right)$$

$$\frac{\sin\left(x\right)+\cos\left(x\right)}{\sin\left(x\right)}=1-\tan\left(x\right)$$

$$2ab+4a$$

$$\frac{\tan\left(x\right)+\cot\left(x\right)}{\sec\left(x\right)+\csc\left(x\right)}$$