Автор - fedorenkovasofia0
1) 56:(а-8) = 4
4*(а-8) = 56
4а-32 = 56
4а = 56+32
4а = 88
а = 88:4
а = 22
2) 92:(14+р) = 4
4*(14+р) = 92
56+4р = 92
4р = 36
р = 36:4
р = 9
3) 120:(d+3) = 15
15*(d+3) = 120
15d+45 = 120
15d = 120-45
15d = 75
d = 75:15
d = 5