Final answer:
The student's question is about finding a pair of equations to solve for two variables given certain conditions. The two equations needed are: a - b = 12 and a = 3b + 5. These equations can be solved simultaneously to find the values of a and b.
Step-by-step explanation:
The student is asking for a pair of equations that can solve for the values of two variables, a and b, given two conditions.
Condition 1:
The difference between a and b is 12, which can be written as:
a - b = 12 (Equation 1)
Condition 2:
The number a is 5 more than 3 times the number b, which can be written as:
a = 3b + 5 (Equation 2)
Therefore, to find the values of a and b, one needs to solve these two linear equations simultaneously.