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(2400/54)/21
400/9/21
400/189
| 1x+25+3x=-16-3x-22 | | 25x-27=26x-26 | | -2-8j=6-10j | | 16.9=-1.3x | | y=2x^2+16x | | -3.4=0.6-4y | | 9t-6=10t+4 | | 3x^2-(m+2)x+m-25=0 | | a(3a+4)= | | 14d-19+67+33=180 | | 5xy=23 | | 2(x+1)(x+1)=12 | | -2f-9=-3f | | z(z-1)+1=0 | | F(-x)=3x^2+4x-4 | | (4x+3)-(2x-1)= | | 0.14y+0.08(y+5000)=2160 | | 5(d-7)=7(2d-5) | | 9y-11=8 | | 9x-3(3-1)=15 | | 3x+0=-12 | | -7y+5x=8 | | 3x-20+2x+y=180 | | 3x-20+2x+y=18 | | -9-8=7x+7-6x | | 9x-7=4x-7 | | 9x*-7=4x*-7 | | (6)+3+7=4 | | 4(3c+8)=3(4c+10) | | -5(3m+10)=25 | | 2=10+xover-3 | | X+3.4609Y=100 |