esther53 esther53
  • 16-08-2019
  • Mathematics
contestada

1
ь - 1 1
[tex]21 - b = 11[/tex]
​

Respuesta :

Gasaqui
Gasaqui Gasaqui
  • 17-08-2019

Answer:

For equation 21-b=11 given in the statement

the answer is b=10

Step-by-step explanation:

This is the equation: 21-b=11

If we sum '-21' to both sides of equation, we have

21-b-21=11-21, which leaves us to: -b=-10

Now lets multiply the equation from above by '-1', we obtain that b=10

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