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

3. Pacific front: Where in the Philippines did the United States defeat the Spanish?
As the wavelength of a wave gets longer, the frequency_____________. a. increases. b. decreases. c. stays the same. d. is not related. Please help me
I need help on this question
Please help mee Idk.
PLEASEEE HELPP ! WILL MARK BRAINLIEST ! Why do you think oil and water produce different cooking results? *HINT: Think about the nature of the molecules in the
When did the middle ages take place A 400 BC to AD 1000 B AD 400 to 1450 C AD 1400 to 1800 D AD 100 to 1450
what is the slope of the line that passes through the points (10,5) and (15,20)​
Banned the British colonist from settling west of the Appalachian Mountains
Simplify the following expression.1/4 (24 - 16x)​
Pls help parents will ground me from everything if I don’t get me my homework done PLEASE