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kifflom [539]
2 years ago
13

Solve the system of equations 3x + y = 3 and 7x + 2y = 1.

Mathematics
1 answer:
vodka [1.7K]2 years ago
4 0

Answer:

  (x, y) = (-5, 18)

Step-by-step explanation:

You have done the first two steps.

<h3>3.</h3>

  7x +2(3 -3x) = 1 . . . . . equation with y substituted

  7x +6 -6x = 1 . . . . . . . eliminate parentheses using the distributive property

  x = -5 . . . . . . . . . . . . . subtract 6 from both sides, collect terms

<h3>4.</h3>

  y = 3 -3(-5) . . . . . . . . use the substitution equation to find y

  y = 18

The solution is (x, y) = (-5, 18).

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