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-7*x-10 = -27/2 // + -27/2
-7*x-(-27/2)-10 = 0
27/2-7*x-10 = 0
7/2-7*x = 0 // - 7/2
-7*x = -7/2 // : -7
x = -7/2/(-7)
x = 1/2
x = 1/2
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