Help me please and thx

X/6 = 5/10 // - 5/10
X/6-(5/10) = 0
X/6-1/2 = 0
1/6*X-1/2 = 0 // + 1/2
1/6*X = 1/2 // : 1/6
X = 1/2/1/6
X = 3
X = 3
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