SOLUTION: Irene gave half of her marbles to patty and then 8 marbles to maria. she had 16 marbles left. How many marbles did she have at the beginning

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Question 426005: Irene gave half of her marbles to patty and then 8 marbles to maria. she had 16 marbles left. How many marbles did she have at the beginning
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = number of marbles she started with
given:
+x+-+%281%2F2%29%2Ax+-+8+=+16+
multiply both sides by 2
+2x+-+x+-+16+=+32+
+x+-+16+=+32
Add 16 to both sides
+x+=+48+
check:
She started with 48 marbles
She gave 24 to Irene, leaving 24
She gave 8 to Maria, leaving 16
OK