sarah26138 sarah26138

16-02-2021
Mathematics

contestada

Which is the best first step when solving the following system of equations?

y = 7 x + 3. y = 9 x.
Multiply the first equation by –7.
Substitute 9x for y in the first equation.
Multiply the second equation by Negative 3.
Substitute 7x for y in the second equation.

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sheluvalex sheluvalex

16-02-2021

B. Substitute 9x for y in the first equation

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FlexTapeFixesAll FlexTapeFixesAll

24-02-2021

Answer:

IT B

Step-by-step explanation:

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