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=7S
We move all terms to the left:
-(7S)=0
S=0/-7
S=0
| (y-0)²=0 | | z+4(2z+30)=15 | | 7×n=49 | | 8.8x+40.04=-11.2x+38.30 | | 0.1x=0.2-2(x+2) | | (x-30/18=26/8 | | x-7+6=0 | | 7x^2-8x-17=0 | | -15=-3c+6 | | 7x-4=2x-42 | | 3x+17-5x-11=140 | | 2(2y=9)=50 | | 7s/2=30 | | 8=3|4x-10| | | 10.3x+70.77=-9.7x+69.69 | | 5/8n=1/15 | | -2p+-4=6 | | 2x+18=16–(x+7) | | -u+4=2 | | 1+-3r=10 | | X2=9.75s | | -2p=-4=6 | | 2-(x+3)=3(x+3) | | 1/2(w+10)+3w=9 | | -9q−9+10q=4q−3 | | 36-18x=20-16x | | 16x3x-20=90 | | 6s=6+5s | | x-350x-21=-357(x-42) | | 420-69x=4 | | 4+(3x-1)=3+8x-11 | | 180(n-2)=2340 |