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98.6-(x/1.4) = 0
98.6-0.71428571*x = 0
98.6-0.71428571*x = 0 // - 98.6
-0.71428571*x = -98.6 // : -0.71428571
x = -98.6/(-0.71428571)
x = 138.04000083
x = 138.04000083
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