4 years ago

Solve by substitution. {y=2x+3 {5x-y=-3

Mathematics

1 answer:

AysviL [449]4 years ago

4 0

5x - (2x + 3) = -3

3x + 3 = -3

-3 -3

3x = -6

/3 /3

x = -2

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

y = 2x + 3

y = 2 (-2) + 3

y = -4 + 3

y = -1

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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