227-89 = 138
316 - 89 = 227
Actinium (Ac) Atomic Number: 89 Atomic Weight: 227 Protons: 89 Electrons: 89 Neutrons: 138 -----(227-89=138)
Actinium (Ac) Atomic Number: 89 Atomic Weight: 227 Protons: 89 Electrons: 89 Neutrons: 138 -----(227-89=138)
224 rn 86
It is: 27+89 = 116
70 + 19 = 89 or: the sum of 70 and 19 is 89
34.6 + 89 = 123.6
67 + 89 = 156
100
The sum of 101 and 89 is 190.
89 + x = x +89