math
posted by chris on .
Write a number sentence for the model. Let one white tile equal +1 and one black tile equal –1.
A. –14 – (–6) = –8
B. 14 – 6 = 8
C. –14 – 6 = –8
D. –14 – (–6) = 8
i put d but it was rong

it has a picture with it but it wont past to the page

Write a number sentence for the model. Let one white tile equal +1 and one black tile equal –1.
A. –14 – (–6) = –8
B. 14 – 6 = 8
C. –14 – 6 = –8
D. –14 – (–6) = 8
i put d but it was rong 
me to then i found out it was a

Yep. The answer is A. I have done this test.
Here's what is wrong:
B. Is completely wrong because remember there are NEGATIVE tiles too. And in this equation there are more NEGATIVE tiles than positive.
C. Has the wrong product; It would be 20 NOT 8.
D. Has the wrong product; It would be 8. When subtracting NEGATIVE numbers, the answer will be NEGATIVE. Unless the number that you subtracted had a bigger sum than the 1st number, then, the answer would be POSITIVE. But in this question, it's MOST definitely NEGATIVE.