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2 October, 02:01

The work of a student to solve a set of equations is: Equation A: y=15-2z and Equation B: 3y=3-4z so what would steps be?

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  1. 2 October, 02:18
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    You have to use substitution:

    You already know what y is in terms of z so put it into the other equation

    3 (15-2z) = 3 - 4z

    45-6z=3-4z

    42=2z

    21=z
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