Seudónimo Seudónimo
  • 02-02-2016
  • Mathematics
contestada

Solve 2a + 21 = 8a - 9, step by step

Respuesta :

Аноним Аноним
  • 02-02-2016
2a + 21 = 8a - 9

Combine like terms. 

2a + 21 = 8a - 9
-2a          -2a

21 = 6a - 9 
+9          +9

30 = 6a
6a/6 = 30/6
a = 5

Answer: a = 5
Answer Link

Otras preguntas

whichEarthis ator thethesun?centerofoursolarsystemthe​
What is the slope of the line x + 5y = 9?
if a car goes at a speed of 80 kph in 10 seconds, what is the distance
Bastien, Inc. has been manufacturing small automobiles that have averaged 50 miles per gallon of gasoline in highway driving. The company has developed a more e
While checking for consciousness, the rescuer should also check
the atomic number of fluorine ​
How is Japan trying to compensate for the rise in the average age of its people?
Find x in this proportion. x/3 = x+2/5 x = -1 1 2 3
To make a password for your school login, you must have 4 different lowercase letters followed by any 2 digits. How many passwords are possible?
Find the difference. 3 1/4 - 1/6 = Enter your answer as a mixed number.