Question

Помагите решить 15+a-13 и b-2+18 при a=5;a=10;a=30;b=32;b=43;b=52

Answer 1

15+a-13 = 15+5-13 = 7
15+a-13 = 15+10-13 = 12
15+a-13 = 15+ 30-13 = 32

b-2+18 = 32 - 2 + 18 = 48
b-2+18 = 43 - 2 + 18 = 53
b-2+18 = 52 - 2 + 18 = 68

Answer 2

Сначала упростим
15 + а - 13 = 2 + а
а = 5 => 2 + 5 = 7
а = 10 => 2 + 10 = 12
а = 30 => 2 + 30 = 32

b -2 + 18 = b + 16
b = 32; 32 + 16 = 48
b = 43 ; 43 + 16 = 59
b = 52; 52 + 16 = 68