real form of 3.006*10^-5
5(3-2x)-(2x-a)
590871
2725594
2012190
605079
5451188
4024380
22975516
27991016
5028966
10175029
9619253
4²-4×5
5° +(-3)²+4
2 = b(2/b)
(-8)^-1*x=(20)^-1
(-8)^-1*x=(20)-1
by what number should (-8)^-1 be multiplied to get (20)^-1?
