$7sin\left(2x\right)=cos\left(x\right)$
$\left(300\cdot2^1\right)$
$y=2x-3y+1$
$1-sinx=cos2x$
$\frac{2}{x+2}+1=\frac{3}{x}$
$\int\left(-3x\left(-2x^2-1\right)^3\right)dx$
$\int3m^2nxdx$
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