14x+90=2014x+90=2014x+90=20
3x−1≤2x+43x-1\le2x+43x−1≤2x+4
7m2−4m2−11m27m^2-4m^2-11m^27m2−4m2−11m2
cos(a+π)cos\left(a+\pi\right)cos(a+π)
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