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-42x(x+2=0
| 40-2y=20 | | (x+6)/(5)=2 | | (7y-12)=180 | | 4(x+5)-9=-7 | | 15x–2(4x+1)=–9 | | 2+4x=-4 | | 6+6f=4f | | 198=2x+78+2x | | 1+4a=13 | | -(2x-(-1+3x)=0 | | 12=2.5w | | 4x+3-2x+2=4x-1 | | 2=(1+r)^18 | | 1-3x=46 | | 2-3(x-5)=5(x-1) | | 2n/7=21 | | 60=1.6x+48,x | | 48x+56=48x+92 | | 8x+7=10x−8 | | 25-x²=0 | | -9+y/3=6 | | -3t-5t=-3(t-15) | | n+3n-7=4n-7 | | 15x+40=9x+96 | | 1/2x-5=2/3x+1 | | -(n+2)=0 | | 4u-7=5u | | n-11=159 | | -10=k-17 | | -42–6n=-30 | | 2(x+3)=-(x-3) | | 56x+24=144 |