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4b+8=?     Please help me  b=8.      Explain how to evaluate this expression 

 Feb 16, 2015

Best Answer 

 #2
avatar+3451 
+10

Yes, so if you know what b equals, you can put that number in for b around parenthesis.

We have 4b+8, and know that b = 8, so that means

4(8)+8 is our answer.

The parenthesis mean to multiply, so we multiply 4 times 8, and then add 8 to that.

4 x 8 = 32

add 8 to that

32+8 = 40

 

40 is the answer.

 Feb 17, 2015
 #1
avatar
0

if a letter representing a number is next to a number, you multiply

 Feb 16, 2015
 #2
avatar+3451 
+10
Best Answer

Yes, so if you know what b equals, you can put that number in for b around parenthesis.

We have 4b+8, and know that b = 8, so that means

4(8)+8 is our answer.

The parenthesis mean to multiply, so we multiply 4 times 8, and then add 8 to that.

4 x 8 = 32

add 8 to that

32+8 = 40

 

40 is the answer.

NinjaDevo Feb 17, 2015
 #3
avatar+112062 
0

Hi Ninja,

It is really great to see you back again. 

 Feb 17, 2015

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