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Marina CMI [18]
3 years ago
9

Ella brought 7 new Christmas cards to add to her card collection this year. the next day she mailed half of her entire collectio

n to her elf family and friends. there are now only 21 cards left. how many cards did Ella start with?
Mathematics
1 answer:
mrs_skeptik [129]3 years ago
6 0

Answer:

42

Step-by-step explanation:

the half of 42 is 21 so if she mailed the half of it then she just have 21 cards

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