20170632
20170632 20170632
  • 23-02-2020
  • Mathematics
contestada

What is the solution to this equation?
x- 12 = 9
O A. =-3
O B. x=21
O c. x= 3
O D. x=-21​

Respuesta :

Аноним Аноним
  • 23-02-2020

Answer:

[tex]B. x=21[/tex]

Step-by-step explanation:

[tex]x- 12 = 9 \\ x = 12 + 9 \\ x = 21[/tex]

Answer Link
hbkalyssa hbkalyssa
  • 23-02-2020
B.
You add +12 to both sides and the left side cancels out, leaving X. Then 9+12=21. So X=21
Answer Link

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