Seudónimo Seudónimo

05-05-2017
Mathematics

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(08.05)
A student is trying to solve the system of two equations given below:

WILL GIVE BRAINLIESTEquation P: x + y = 8
Equation Q: 2x + 5y = 24

Which of the following steps can be used to eliminate the x term?
2(x + y = 8)
−2(x + y = 8)
−1(2x + 5y = 24)
−2(2x + 5y = 24)

Respuesta :

mreijepatmat mreijepatmat

05-05-2017

You should use −2(x + y = 8) to eliminate x:

Proof: multiply all the terms of (x + y = 8 by -2

-2x -2y = -16. Now add up this equation to 2x + 5y = 24 & x will be eliminates

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