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28;0.75
2*x
28;21
28;7
40/y = 9
| 2(x-1)+3(x+2)=29 | | 9k^2=168 | | 28x+7=23 | | x-3(1-x)-9=0 | | 15:33=5/x | | (x+5)+40+(180-4x-30)=180 | | 40/y=9 | | (x-3)*2+(y+3)*2=36 | | -4x+3x-2-x=-5x-3+5 | | V=2r+s | | 18-2/3×15 | | 2(x+5)=3(-x+5) | | 4y*10y= | | 3x^2-2x-y^2+4x=8 | | 10x-1(x)=30 | | 2(6x+1)=3(x-5)-2 | | 2(f-4)-4(f+4)=0 | | 4s-2=1s+10 | | 5x-20+1=5x-18 | | 6+2x+10=42 | | 4x-8+2=4x-6 | | log(4)65=x | | 4x-3yi=16-9i | | -x+2(-4x+2)=-5 | | 7(x-6)=3(x+9) | | 1/8d-3(d-7)=5.125d-3 | | (x^5-173)^3/(x^5-173)^4 | | 5x-20=5x-18 | | 3x-5=In9/4 | | x-7+5=42 | | y=1.5x+-4 | | 6z-19=2z+12 |