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(-7x-2)^2-(5x-3)^2=0
| 98-x=54 | | 4x+11=8x+11 | | 5p=3p–8 | | 10/x=30/60 | | n+n+7=15 | | 0.25x-0.1x(30-x)=5.85 | | 24x-12=36x+24 | | -e8=96 | | 7x–2=5x+10 | | -56=c(-14) | | 76-w=174 | | 134=222-x | | -63=f9 | | 108=-y+264 | | x-67=78 | | -8n-13=-6n-21 | | 4(3b-5)=-56 | | 123-x=199 | | x/6–1=17 | | 4(3b-5)=-55 | | 89(x-4)=88 | | 10n+12=-5-18 | | 3/2p-4=8 | | 0,25(2x+4)=4-2x | | 4(14p+8)=6(9p-9) | | 100+2=60-7a+3a+9 | | 2n-12=18-4n | | x-3=17-x | | 115=11x-17 | | x²+40x-480=0 | | x+x(.20)=60 | | 3200=x(160-2x) |