90 cards in total and 30 in each stack
-4 - 2x = -12
Add 4 to both sides, because whatever you do on the right you have to do it on the left side
-2x = -8
Divide by -2 to isolate the x to get the x value
x = 4
Answer:
preserve
Step-by-step explanation:
because 8 divided by is equal to 1 soo....
D, 7:5 because the original ratio is 21:15 (comedies:action), which can be dived by 3. 21/3=7 15/3=5
