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Jet001 [13]
3 years ago
11

PLEASE HELP!!!!!!!!!!!!!!!

Mathematics
2 answers:
icang [17]3 years ago
8 0
I think its c / third one
vivado [14]3 years ago
4 0
Hi there ! i think is number one. or a
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What is the solution to the system of equations?
alukav5142 [94]

Answer:

  (x, y) = (-4, 15)

Step-by-step explanation:

The two equations have the same coefficient for y, so you can eliminate y by subtracting one equation from the other. Here the x coefficient is largest for the first equation, so it will work best to subtract the second equation.

  (3x +y) -(2x +y) = (3) -(7)

  x = -4 . . . . . . . . simplify

Now, we can find y by substituting this value for x.

  2(-4) +y = 7

  y = 7 +8 = 15 . . . . . add 8 to both sides of the equation

The solution is (x, y) = (-4, 15).

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3 years ago
How many solutions does the equation −2a + 2a + 7 = 8 have? One Two None Infinitely many.
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