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1/2-7 = -3
-13/2 = -3
L <> R
| -4+3(1+2x)=20 | | 12(x+1)=3(rx+8)-12 | | 8x+19+21=10x+2 | | an=6+(n-1)(6) | | 4y/3=28 | | 4a-2=-6a+28 | | Y=3/42x | | (1x-4)+6x=2(.5x+10)-4 | | 2/5x3=16x-1=5 | | ln(4x-12)=2lnx | | 2(x+4)=0.2(2x+4) | | 8.16x+48.96=97.92 | | yx^2-4y-x^2=0 | | sinx-12cosx=13 | | 3.5-4/5 | | 3=-y-1/2x | | (1/sin^2x)(2cosx-1)=0 | | .14/tan | | 2n^4*n^2= | | 46-(2*4)+7= | | 128=(x+7)(x-1) | | 20x+20-4x=20+16x-6 | | 49=7(b+9) | | 3/10b-(1/10b-10)= | | =0.826772 | | X^2+2.5x=1.5 | | 10=-420t^2 | | 5(4x+4)-4x=4(5+4x)-6 | | -1/4x-8=-16 | | X^2+2.5=1.5 | | 2x-4+4x=6-1x | | -8x(8x)=-48 |