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4/9 = 12/27
cos(y-x)
sin(y-x)
5/2-13 = 3
(e^x*(x-1))/(x^2) = 0;x
x
| x+3Z=5 | | 4[y-2(x+7)+9(y-x)]= | | 4/9=12/27 | | 4/5-2x/5=6 | | 10x+3=11x | | 90=-6(k-7) | | 8(4n+3)= | | 2+2(4v-1)=-2(7v-2)+8 | | 80(x-3)=5x+8 | | 17-(t*3)=5.6 | | 9-1/3x=1 | | u-5=1 | | z+10=1 | | y-2=-11 | | 5(2r-8)=-110 | | .30+2.5= | | z-6=-12 | | 3(7+x)=2 | | (10x)(10x)-6=9x | | 18x=75-15y | | -7/86x | | (10)(10x)-6=9x | | 7-145= | | 4x^2=5x-3 | | 3(2n+1)=8(3n+7)+1 | | 10x+30*3=6(x+30) | | 11m-10=10 | | 3[d+2(f-3)-4(f-6d)]= | | 3x-(2y)+4+6y= | | -8x-7(5+2x)=-123 | | 8x-8=-3x-4 | | V^2+8vz+15x^2= |