Which expression is not equivalent to 4k? 3k+4+k+83(k+3)+3. 4(k+3)2(2k+5)+2

Question

Which expression is not equivalent to 4k + 12?

3k+4 +k +8

3(k+3)+ 3

4(k +3)

2(2k+5)+2

 

Answer 1

Hi Debbie,

 

4k+12

 

1)  3k+4+k+8=4k+12

 

2) 3(k+3)+3=3k+9+3=3k+12

 

3) 4(k+3)=4k+12

 

4) 2(2k+5)+2=4k+10+2=4k+12

 

The (2) expression 3(k+3)+3 is not equivalent to 4k+12

Answer 2

3(k+3)+3=3k+3*3+3=3k+9+3=3k+12

3(k+3)+3 is the answer

 

3k+4+k+8=3k+k+4+8=4k+12

4(k+3)=4k+4*3=4k+12

2(2k+5)+2=2*2k+2*5+2=4k+10+2=4k+12