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Mathematics, 30.01.2021 04:30 lgisselle629

A student is trying to solve the system of two equations given below: equation P: y + z = 6
equation Q: 5y + 9z = 1

Which of the following is a possible step used in eliminating the y-term?

A: (y + z = 6) × 9
B: (y + z = 6) × -5
C: (5y + 9z = 1) × 9
D: (5y + 9z = 1) × 5

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