shelby85387 shelby85387

04-02-2021
Mathematics

contestada

y=-2x+1
4x+y=9
solve using the substitution method please show steps

Respuesta :

Anisatunizzati Anisatunizzati

05-02-2021

Answer:

x = 4

y = -7

Step-by-step explanation:

y = -2x + 1

4x + y = 9

4x + y = 9

4x + (-2x + 1) = 9

4x - 2x + 1 = 9

2x + 1 = 9

2x = 9 - 1

2x = 8

x = 8/2

x = 4

4x + y = 9

4(4) + y = 9

16 + y = 9

y = 9 - 16

y = -7

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