A + 3 rectangle = 8 rectangles
A + B = 7 rectangles
B + C = A + 2 rectangles
- A = _____ rectangles
- B = _____ rectangles
- C = _____ rectangles
A + 3 rectangle = 8 rectangles --- (1)
A + B = 7 rectangles --- (2)
B + C = A + 2 rectangles --- (3)
(a)
From (1)
A + 3 rectangle = 8 rectangles
A = 8 rectangles - 3 rectangle
A = 5 rectangles
(b)
Substitute A = 5 rectangles into (2).
A + B = 7 rectangles
5 rectangles + B = 7 rectangles
B = 7 rectangles - 5 rectangles
B = 2 rectangles
(c)
Substitute A = 5 rectangles and B = 2 rectangles into (3).
B + C = A + 2 rectangles
2 rectangles + C = 5 rectangles + 2 rectangles
2 rectangles + C = 7 rectangles
C = 7 rectangles - 2 rectangles
C = 5 rectangles
Answer(s): (a) 5; (b) 2; (c) 5