Question

15+а-13 и b-2+18 при a=5,a=10,a=30 и b=32,b=43,b=52

Answer 1

1)15+5-13=7
15+10-13=12
15+30-13=32

2)32-2+18=48
43-2+18=59
52-2+18=68

Answer 2

15+а-13=2+а
2+5=7
2+10=12
2+30=32