Question

Each month, a shopkeeper spends 3x+2 dollars on rent and 7x+4 on electricity. Ahmed claims that the shopkeeper spent a total of 10x+2 on rent and electricity.

Is Ahmed correct?

Justify your answer by showing your work

Answer 1

No. Adding the 2 amounts gives 7x + 6.

Explanation:

Adding:

3x + 2 + 7x + 4

= 10x + 6.

Answer 2

Nope he’s not

3x + 7x = 10x
2+4= 6
So the answer is 10x + 6 not whatever Ahmed got