$\frac{dx}{dy}\:+\:5x\:=10$
$3b+a-b+4a$
$\int\frac{1}{\left(x^4-1\right)}dx$
$\lim_{x\to1}\frac{\left(x^2-x\right)}{\ln\left(x-x+1\right)}$
$3a\:+\:6b-4-8b+2a-9$
$-8\le-12+y$
$-2x^3+4x^2+x+2x+1$
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