Luis and Sam have 2 balls altogether. Luis has 8 more balls than Sam. Find the number of balls each boy has.
- Sam
- Luis
Number of balls that Sam has = 1 u
Number of balls that Luis has = 1 u + 8
Total number of balls
= 1 u + 1 u + 8
= 2 u + 8
2 u + 8 = 2
2 u = 2 - 8 = -6
1 u = -6 ÷ 2 = -3
(a)
Number of balls that Sam has
= 1 u
= -3
(b)
Number of balls that Luis has
= 1 u + 8
= -3 + 8
= 5
Answer(s): (a) -3; (b) 5
