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

How did the Korean War impact Korea
Why are there so many steps in the legislative process ?
what are some fun facts about ancient roman roads
Making the Air Force by Michael Signal (1) The United States military is divided into distinct branches. Each branch has a specific purpose and mission statemen
18. Inexperienced cooks often prevent flavor from developing in food by A. turning it too often. B. cooking it too quickly. C. allowing the poaching li
My teacher didn’t give us the formula for this special right triangle so i don’t know how to even do it
A man standing on a lighthouse at a height of 124 feet sights two boats directly in front of him. One is at an angle of depression of 62°, and the other is at a
please help i dont know how to do this
In May of 1790, Congress created the Southwest Territory and decided the laws of the new territory would be similar to the laws of the Northwest Territory with
What does “layering flavors” mean?