A + B = 10
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 = 10
So, the total value is 10.
(c)
B = 1 u
A = 1 u + 2
Total
= 1 u + 1 u + 2
= 2 u + 2
2 u + 2 = 10
2 u = 10 - 2 = 8
1 u = 8 ÷ 2 = 4
B = 4
(d)
A
= 1 u + 2
= 4 + 2
= 6
Answer(s): (a) A; (b) 10, (c) 4; (d) 6