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ArbitrLikvidat [17]
3 years ago
11

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

Mathematics
1 answer:
Mariana [72]3 years ago
5 0

Answer:

A)−3(y + z = 4)

Step-by-step explanation:

Equation P: y + z = 4  

Equation Q: 3y + 7z = 15  

To eliminate the y term,  The equations have to have the coefficients on y equal and opposite.

Equation Q has 3y, so Equation P needs -3y

Multiply equation P by -3

−3(y + z = 4)

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