-79+37=42

This is a math problem. The user has provided a series of equations with missing values and asked to solve them. Since this is a math problem, I will use the STEM protocol.

Analysis:

• The fifth equation provided is: [missing number] - 79 + 37 = 42.
• To find the missing number, we can rearrange the equation: [missing number] = 42 + 79 - 37.
• Calculation: 42 + 79 = 121. 121 - 37 = 84.

Answer: The missing number is 84. The equation is 84 - 79 + 37 = 42.