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if 3x + 21, then what is x?

 May 23, 2014

Best Answer 

 #1
avatar+91 
+9

do you mean 3x = 21? If so,

start off by dividing each "side" by 3.

3 divided by 3 = 1. 21 divided by 3 = 7.

Then, you are left with the equation 1x = 7

The equation can be simplified to: x = 7. Tada!

 May 23, 2014
 #1
avatar+91 
+9
Best Answer

do you mean 3x = 21? If so,

start off by dividing each "side" by 3.

3 divided by 3 = 1. 21 divided by 3 = 7.

Then, you are left with the equation 1x = 7

The equation can be simplified to: x = 7. Tada!

all-them-marvel-feels May 23, 2014
 #2
avatar+676 
0

 all-them-marvel-feels is correct!

Your equation is written as an Expression therefore making no sense. I would reword the equation for clarity. But, given that 3x=21 is what you mean. You have been answered.

 May 23, 2014
 #3
avatar+11912 
+5

i think u should first write the correct question and then ask for the answer !

 May 23, 2014
 #4
avatar+118677 
+5

3x+21 cannot be simplified!

 May 24, 2014

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