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(-2/9)*x-4 = 7/8 // - 7/8
(-2/9)*x-(7/8)-4 = 0
(-2/9)*x-7/8-4 = 0
-2/9*x-39/8 = 0 // + 39/8
-2/9*x = 39/8 // : -2/9
x = 39/8/(-2/9)
x = -351/16
x = -351/16
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