2n-4=-12
Add 4 to both sides
2n=-8
Divide by 2 on both sides
n=-4
To do these types of questions do reverse PEMDAS. Do the opposite sign such as adding to undo subtraction.
Answer:

Step-by-step explanation:
Step 1:
Convert the mixed numbers to the improper fractions:

Step 2:
We multiply the numbers remembering about simplifying:

Answer:
3 boxes with a remainder of 7 lemons left
Answer:
y-5=2/3x(12-x) would be point form