Уравнения 18

Решение уравнений: а) \[x - 12 = 0\] \[x = 12\] б) \[25 + x = 25\] \[x = 25 - 25\] \[x = 0\] в) \[x : 108 = 1\] \[x = 108 \times 1\] \[x = 108\] г) \[y : 1 = 37\] \[y = 37 \times 1\] \[y = 37\] д) \[x \times 15 = 0\] \[x = 0 \div 15\] \[x = 0\] е) \[x \times 18 = 18\] \[x = 18 \div 18\] \[x = 1\]