claudioarellanom22 claudioarellanom22

19-04-2021
Mathematics

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What is the result of subtracting the second equation from the first ? -7x-y=0 and 7x+8y=-6

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jimrgrant1 jimrgrant1

19-04-2021

Answer:

- 14x - 9y = 6

Step-by-step explanation:

- 7x - y = 0 → (1)

7x + 8y = - 6 → (2)

Subtracting (2) from (1) term by term

- 7x - 7x - y - 8y = 0 - (- 6)

- 14x - 9y = 0 + 6

- 14x - 9y = 6

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