### Home > CCAA > Chapter 3 Unit 2 > Lesson CC2: 3.2.2 > Problem3-46

3-46.

Find the value of each expression below. Change any subtraction problem to an equivalent addition problem.Draw a diagram with $+$ and $-$ tiles to justify your answer.

1.  $5-7$

The equivalent addition problem is $5+(-7)$.

1.  $-5+(-7)$

The drawing should look something like this:
$-----$
$-------$

1.  $-5+7$

$2$
Remember to draw your diagram.

1.  $-5-(-7)$

For the expression $-5-(-7)$, draw three pairs of zeros ($+$ & $-$). Then add $5$ negatives.  Then take out $7$ negatives. Remove any zeros.  What is left?