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415;7
120;800
394.8;12
3948.8;12
3103;547
| 5x+2=-14-3x | | 5s+4=s | | 4x-7=-17+2x | | 12d+15=20d+2 | | X/2-3=5/6x-7 | | 13x^2-10x+4=0 | | 15=8d+2 | | 18+5c=9c-6 | | cosx-cos^3(x)=0 | | 10a-19a+-19=17 | | 4+9b=3b-26 | | 2-3(x-3)=3-2(x+4) | | lg(x+3)=-lg(2x+5) | | 77-5u=-43 | | -6=10-r | | 2.0-3.5=2.5+0.5(5a-7a) | | 12x+24y=2496 | | (13x+8)+(2x+7)=180 | | -5x+8=6x-2 | | Tan^2x+2=2secx | | 3(v-9)=18 | | Tan^2x+2=2sex | | x^2-3=x+3 | | -20h+19h=18 | | 4c+-15c=11 | | 9-j=16 | | 17q-16q=13 | | y-(-17)=5 | | 2.8y+6+0.2y=57-14 | | .75*1.50= | | an=20+(n-1)2 | | -0.75q=31.5 |