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?

Question

Mathematics

Kaylen Villarreal

8 February, 02:27

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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Answers (1)

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Ellie Ferguson · Answer 1

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