Nguyễn Thanh Hương - Nguyễn Thanh Hương page - Discuss with MathYouLike

Nguyễn Thanh Hươnganswered a question
13/07/2017 at 20:21
x + 50 = 75

x = 75 - 50

x = 25

x - 25 = 50

x = 50 + 25

x = 75

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