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12.5*(2512/3.14)
12.5*800
10000
| 1-10/3x=10/7 | | 8.5+4(1.25k)=-24.5 | | 7x-4-9x+12= | | 3/7•a | | 8+x=16+0.4x | | 3+8(x-2)=6-8(x-7) | | 30=6+3t | | 4x/7-12=7 | | -7t-6=-55 | | 9a+5=-40 | | 16x^2-47=0 | | (4x-6y)+(7x-8y)= | | 9-x=20-2x | | 22/3-5=32/4-1 | | 4t+6=38 | | y^2+16y+16=0 | | 6x-5/8x-3 | | (x^2*D^2+3x*D+4)=0 | | (2x+312)=(103+x)+224 | | coax=-1/4 | | 3(3x+4)-5(7x-3)= | | x+7x+2x-20=180 | | 8(6-6x)=-96 | | x+12+48+90=180 | | 92+x+10+2x+12=180 | | 16x-3=12x | | C=7.5(D+9) | | -8y+6(y+5)=22 | | (6-3i)(6+3i)=0 | | 4cos^2(3x)+sin^2(3x)= | | 0=ln(4-x) | | 5B+5A=105 |