grace12398 grace12398

23-04-2020
Mathematics

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Which is the best first step in solving the following system of equations y=7x+3 y=9x

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23hlivsey 23hlivsey

23-04-2020

Answer:

13.5 and 1.5

Step-by-step explanation:

y=7x+3

y=9x

9x=7x+3

2x=3

x=3/2

y=9(3/2)

y=13.5

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kayladopke0 kayladopke0

23-04-2020

Answer:

Replace the y value in y=7x+3 with 9x

Answer: x=3/2

Step-by-step explanation:

y=7x+3; y=9x

9x=7x+3

Subtract 7x from both sides

2x=3

Divide by 2 on both sides

x=3/2

Answer Link

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