Known as 357 ÷ 2 1 = 17, 6 =15 = 21.400-43 = 357, the three formulas are combined into a comprehensive formula:

(400-43 )÷(6+ 15)

2. The sum of number A and number C is 48, and the number A is 32 larger than the number C. What is the number C?

Column synthesis formula:

(48-32)÷2