Question

(08.03 LC) A system of two equations is shown below: Equation C: a = 4b + 5 Equation D: a = 6b − 2 What value of a can be substituted into equation D to solve the system of equations? (5 points)

Answer 1

4b + 5

Explanation:

Equation C tells us ...

a = 4b + 5

so, the value "4b +5" can be substituted for "a" in Equation D.

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In algebra, things that are equal are interchangeable. One can always be substituted for the other.