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-21x^2(-343x(+1=0
| 2(x-4)=-32+6x | | 3x-(4+x)6+15=48 | | -3(-7x+4)-4x=1.5(-5x+8.6)2x | | 3x(4+x)6+15=48 | | 24-9x=-13x+8 | | 9=9x+9 | | S(x)=20,000-2,000x | | -3x(4+x)6+15=48 | | 5x+6.2=9.5-6x | | 52=9/5c+32 | | 7(8r+4)=28+8r | | 4n+3+2n-7=175 | | 4z/12=-8 | | 7x(4x-2)=10 | | -1/7(-49x-105)-3x=-49 | | -17=6(11x+3) | | 12x+4-8x=16 | | 5x=6.2=9.5=6x | | 8u-12=44 | | a+1a+6=36 | | 3x+3=2x+23 | | -144x(1-1)=0 | | 7(2b-6)=-10-2b | | 13=h/3+11 | | 3/15=5/b | | 2y/3=3y/5-4/3 | | 4=8+m/4 | | a+6=a+36 | | 3(x-5)+6x=3 | | 2x+62=5x+36 | | 25+5=25t-7 | | -0.2(1–x)=4(4+0.1x) |