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Kyle has a rock collection. On Monday, he found 16 new rocks. On Tuesday, he gave 9 rocks to his friends. After giving away the rocks, Kyle had 122 rocks left in his
collection. How many rocks did Kyle have to start with?

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Answer:

127

Step-by-step explanation:

he had 122 rocks and he found 16 rocks on monday but he subtracted 9 from the rocks he found so

122+16=136

136-9=127

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