A system of two equations is shown below:

Equation C: a = 2b + 7
Equation D: a = 5b − 3

What value of a can be substituted into equation D to solve the system of equations? (5 points)

A: 2b

B: 5b

C: 5b − 3

D: 2b + 7

1 answer

The value of a that can be substituted into Equation D to solve the system of equations is:

C: 5b - 3

This is because Equation D is in the form a = 5b - 3, so by substituting 5b - 3 for a in Equation D, we can solve the system of equations.