Answer:
D
Step-by-step explanation:
D because the number of runs is consistent with the number of innings.
LM + MN = LN
7x - 1 + 2x + 4 = 12
9x + 3 = 12
9x = 12 - 3
9x = 9
x = 9/9
x = 1
5/12
12 pieces of cake is the original amount and 5 kids ate it 5 pieces that means 5/12 of the cake it gone.