A + B = 8
A - B = 2
- Which letter has a bigger value?
- What is the total value?
- Find B.
- Find A.
(a)
A - B = 2
So, A is has a bigger value than B.
(b)
A + B = 8
So, the total value is 8.
(c)
B = 1 u
A = 1 u + 2
Total
= 1 u + 1 u + 2
= 2 u + 2
2 u + 2 = 8
2 u = 8 - 2 = 6
1 u = 6 ÷ 2 = 3
B = 3
(d)
A
= 1 u + 2
= 3 + 2
= 5
Answer(s): (a) A; (b) 8, (c) 3; (d) 5