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2/11.5 = x/23 // - x/23
2/11.5-(x/23) = 0
0.17391304-1/23*x = 0 // - 0.17391304
-1/23*x = -0.17391304 // : -1/23
x = -0.17391304/(-1/23)
x = 4
x = 4
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