mikaylalongwisch mikaylalongwisch
  • 15-12-2020
  • Mathematics
contestada

Use the substitution method to solve the system of equations.
3x + 4y = 10
y = x-1
A. (2,3)
B. (2,1)
C. (3,2)
D. (1,2)

Respuesta :

radarjackson12 radarjackson12
  • 15-12-2020

Answer:

B

Step-by-step explanation:

3x + 4(x-1) = 10

3x+4x-4=10

7x-4=10

+4     +4

7x=14

/7   /7

x=2

y=(2)-1

y=1

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