[(0.1/20)+2*(1/90)]
how to solve 3+2+8÷4 (4-2)
tanA=1/2 and tanB=1/3find tan(A+B)
how to solve 3+2+8/4 (4-2)
tanA=1/2 and ta=nB
how to solve 3+2+8*4 (4-2)
3*3-3/3+3
2x5man
（x*0.015 - y）*(1-1/3.5) < y*(1/3.5 - 1/4)
$\infty$ $a^{b}$
$$\begin{bmatrix}a b\\\ &d en{batix$$ $\it_\Bx}{\ox(\ox dBo$$
