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18 November, 11:23

A set of equations is given below:

Equation A: a = 5b + 1

Equation B: a = 3b + 5

Which of the following is a step that can be used to find the solution to the set of equations?

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  1. 18 November, 12:19
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    Using elimination or substitution then finding a and b.

    a = 5b + 1 : a = 5b + 1 (3) : a = 15b + 3

    a = 3b + 5 : a = 3b + 5 (-5) : a = - 15b - 25

    2a = - 22

    a = - 11
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