$-\frac{5}{9}a-\frac{7}{9}a$
$-6x^5+3x^4-12x^3$
$\lim_{x\to0}\left(e^{3x}-5x\right)^{\frac{2}{sinx}}$
$700\:-\:\left(-402\right)\:$
$2x-y+2z+3v=22$
$-10-5-5+0+5+10+18+15+10+10-5-10$
$\int\left(x^2+x\right)^7\left(2x+1\right)dx$
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