lorakopp723 lorakopp723
  • 20-04-2018
  • Mathematics
contestada

What is the y- coordinate of the solution of the system of equation Y equals { y=3x -26
2x-y=19

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prestonshelton
prestonshelton prestonshelton
  • 20-04-2018
Hello!

We put y into the second equation

2x -1(3x - 26) = 19

Distribute the -1

2x - 3x + 26 = 19

Combine like terms

-x + 26 = 19

Subtract 26 from both sides

-x = -7

Since x is negative we can multiply both sides by -1 to make it positive

x = 7

Now we put this into the first equation to find y

y = 3(7) - 26

Multiply

y = 21 - 26

Subtract

y = -5

The answer is -5

Hope this helps!
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