Where a=Tommy's stamps
41=a+(5+a)
41-5a=2a
36=2a
18=a
(check answer: Tommy has 18, his sister as 18+5=23. 18+23=41)
Answer:
TOMMY HAS 18 STAMPS
Step-by-step explanation:
x = number of stamps for Tommy
Write an equation
x + x + 5 = 41
2x +5 =41
2x = 36
x = 18