Question

question 14 (multiple choice worth 5 points) (08.03 lc) 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? 2b 5b 5b − 3 2b 7

Answer 1

(D) 2b +7

Explanation:

Both equations would be equivalent, and have the same value no matter what

Answer 2

If you would like to know what value of a can be substituted into equation a = 5b - 3 to solve the system of equations, you can do this using the following steps:

equation c: a = 2b + 7
equation d: a = 5b - 3
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a = 5b - 3
2b + 7 = 5b - 3
7 + 3 = 5b - 2b
10 = 3b
b = 10/3

The correct result would be 2b + 7.