1 year ago

Which ordered pair is on the graph of the equation 3x + 7y = 11?

Mathematics

1 answer:

andreev551 [17]1 year ago

4 0

Answer: (6, -1)

Step-by-step explanation:

Plug each pair in:

3(6)+7(-1)=11

11=11

True, so the first pair works.

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1 year ago

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Step-by-step explanation:

Let n be unknown divisor and a be the same remainder, then

$63=q_1\cdot n+a\\ \\45=q_2\cdot n+a\\ \\69=q_3\cdot n+a$

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Subtract them:

$63-45=(q_1-q_2)n\Rightarrow 18=(q_1-q_2)n\\ \\69-63=(q_3-q_1)n\Rightarrow 6=(q_3-q_1)n\\ \\69-45=(q_3-q_2)n\Rightarrow 24=(q_3-q_2)n$

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