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a in (-oo:+oo)
a+5 = 5 // - 5
a-5+5 = 0
a = 0
a = 0
| 5k=35 | | t+10=13 | | k+8=7 | | 17=a+7 | | n-3=-12 | | a-1=-3 | | 1=n-8 | | 3w=0 | | t+1=10 | | (9u^5+3u^2v^4)= | | m+10=-1 | | 13=d+9 | | 2x^2-28+98=0 | | 65x-90=1000 | | 9=a+8 | | b/-3=-5 | | -2y+6= | | 6+n=15 | | -19=b-10 | | 7+k=11 | | 8(x-4)-12=13-6(x+5) | | 9y-27= | | 90-(65x)=1000 | | -2+m=4 | | 14=t+9 | | k-4=-3 | | 15=w+10 | | x+10=22 | | -3m=-12 | | 2g-7=16 | | -5k=0 | | -1+a=4 |