thefloatingballon thefloatingballon

04-11-2020
Mathematics

contestada

Solve the system of equations by substitution:
y= x - 2
x+y=12

A. (7,5)
B. (5,3)
C. (0, 1)
D. (14, 12)

Respuesta :

shaiktext shaiktext

04-11-2020

Answer:

y=x-2

so ...

x+(x-2)=12

2x-2=12

2x=12+2

2x=14

x=14/2

x=7

x+y=12

7+y=12

y=12-7

y=5

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