salvatorestefa salvatorestefa
  • 01-02-2021
  • Mathematics
contestada

solutions to 2-variable equations y=-2x-5

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dtorres4546
dtorres4546 dtorres4546
  • 01-02-2021

Answer:(1, -3).

Step-by-step explanation:

If y=2x-5 is equation (1) and 4x-y=7 is equation (2), then substitute equation (1) in equation (2):

4x - (2x - 5) = 7

4x - 2x + 5 = 7

2x = 7-5

2x = 2

x = 1

Now substitute the value of x in equation (1) to find the value of y:

y = 2 (1) - 5

y = 2 - 5

y = -3

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