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(4/5)*x+8/5 = (7/2)*x+29/10+1/2 // - (7/2)*x+29/10+1/2
(4/5)*x-((7/2)*x)+8/5-(29/10)-(1/2) = 0
(4/5)*x+(-7/2)*x+8/5-29/10-1/2 = 0
-27/10*x-9/5 = 0 // + 9/5
-27/10*x = 9/5 // : -27/10
x = 9/5/(-27/10)
x = -2/3
x = -2/3
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