Question
Substitute numbers for the letters to make the equation true. Same letter has the same number. Different letters have different numbers.
x + x + y = 20
y + a - y = 9
y + x = 13
x + x + y = 20
y + a - y = 9
y + x = 13
Answers
omygod i know the answer now... i solved hahaha. nevermind
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