Difference between revisions of "AMC 12C 2019/Problem 1"

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By expanding, we get <math>10x+50=100</math>. Therefore, the answer is <math>\boxed{5}</math>

Latest revision as of 19:54, 24 March 2021

By expanding, we get $10x+50=100$. Therefore, the answer is $\boxed{5}$