$10x+8=8x+16$
$\sin\left(85\right)=\cos\left(40\right)$
$35+21-6+27+4$
$15a^2-8a^2+a$
$\frac{4}{12\:}\:_-\:\frac{6}{12}\:+\:\frac{2}{12}$
$20+90+51a$
$\infty-3$
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