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16*21*(1/2)
4*sin(x)
4*sin(2*t)
2*12*(1/2)
19/50
| -4x^2+15x+4=0 | | 3(n-3)(n+3n)=0 | | (1/2)*21*16 | | logb(8)+logb(x^2)=logbx | | (1/2)*2*12 | | -15x=-4x+4 | | 7(2x+10)+5x=20 | | 19=2x-17 | | 9(4+v)+33v=14v | | 10/9x18 | | 6x+2(x-3)+4= | | (x^2+8x+41)(x^2+6x+9)=0 | | 6(w-2)=4(4w+8) | | 15/3=11 | | 2m-9=3m-19 | | y=13-10/x-8 | | 87/3-=7 | | 40x+5(1.5x)=790 | | 5=1.4142d/4.9 | | U/3=-15 | | 5=2d/4.9 | | f(x)=3x-2/6 | | 12=(-6)+6-2(-6) | | 18+6f=-2+4f | | 7z^2-12z=20 | | 64+2x=10x+64 | | -1+10q-5q=8q-19 | | -2-18=6c+30 | | -2m+2m=0 | | 6+8r=8r+6 | | 5(x-2)+(-9)=-7(1+x) | | 3=n/4 |