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

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2 Answers

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
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