Answer:
-2/21
Step-by-step explanation:
-2/3 - -4/7
Subtracting a negative is adding
-2/3 + 4/7
Get a common denominator of 21
-2/3 * 7/7 = -14/21
4/7 *3/3 = 12/21
-14/21 + 12/21
