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-x/3 = -1/4 // + -1/4
-x/3-(-1/4) = 0
1/4-x/3 = 0
1/4-1/3*x = 0 // - 1/4
-1/3*x = -1/4 // : -1/3
x = -1/4/(-1/3)
x = 3/4
x = 3/4
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