Answer:
A. 8/7
Step-by-step explanation:
<h3>Step 1 </h3>
4/7 - (-4/7) --> 4/7 + 4/7
The two minutes turn into a plus, removing the bracket.
<h3>Step 2</h3>
4/7 + 4/7 = 8/7
Add the two fractions together.
Answer:

Step-by-step explanation:
3 gallons of blue paint and 5 gallons of yellow paint and this answer is a fraction so
is the answer.
Answer: 52
Step-by-step explanation: Not much work with this one but hope this helps :)
Answer:
112 if you don't include the triangle sides as they are not necessary, but 124 if you include one triangle and 136 if you include both triangle sides