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(1/5)*(2*x-15)+(3/5)*y = 41/4 // - 41/4
(1/5)*(2*x-15)+(3/5)*y-(41/4) = 0
(1/5)*(2*x-15)+(3/5)*y-41/4 = 0
1/5*(2*x-15)+(3*y)/5-41/4 = 0
(1/5*4*5*(2*x-15))/(4*5)+(3*4*y)/(4*5)+(-41*5)/(4*5) = 0
1/5*4*5*(2*x-15)+3*4*y-41*5 = 0
8*x+12*y-205-60 = 0
8*x+12*y-265 = 0
(8*x+12*y-265)/(4*5) = 0
(8*x+12*y-265)/(4*5) = 0 // * 4*5
8*x+12*y-265 = 0
8*x+12*y-265 = 0 // - 12*y-265
8*x = -(12*y-265) // : 8
x = (-(12*y-265))/8
x = (265-(12*y))/8
x = (265-(12*y))/8
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