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40/r = s // - s
40/r-s = 0
40*r^-1-s = 0
x należy do R
x in (-oo:+oo)
| 3/8*c=27 | | 5v-4/10=5/4 | | 5c+12=7c+11.96 | | 80x^2-620x+1360=0 | | 4-x+4=2 | | 1/3*m=32.50 | | 20x^2-155x+340=0 | | 5x-49=6x | | 5-9r=8+5r | | 175*104=12*r | | 2x-5+4x=5+3x+8 | | 3(x-5)=2(-6-x)-2x | | 0.6+0.04x=4.2 | | .70*p=189.95 | | x+44x-77=0 | | -3x=10x | | y=x^2-10x+13 | | 3x+2=-2x-1 | | 7d-3c=f+2dform | | 7-12p+12+11p= | | 10×y/9=100 | | 3x-6=3(2+2(3+x)+4)-1 | | 2-(6x-21)=7(x-2) | | 6*6=-426 | | 8+3m=8-5m | | 3/4*t=6 | | -15=2p+1 | | 10×y/9==100 | | 9-60x=90-25x-30 | | 55x/6=9/4 | | 3/4*t*p=6 | | -0.7+2.4k=18.02 |