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2*(2*x+1)+5*x-(8*x)+1+2 = 51/4 // - 51/4
2*(2*x+1)+5*x-(8*x)-(51/4)+1+2 = 0
2*(2*x+1)+5*x-8*x-51/4+1+2 = 0
(2*4*(2*x+1))/4+(4*5*x)/4+(-8*4*x)/4-51/4+(1*4)/4+(2*4)/4 = 0
2*4*(2*x+1)+4*5*x-8*4*x+1*4+2*4-51 = 0
36*x-32*x-51+4+8+8 = 0
4*x-51+4+8+8 = 0
4*x-43+4+8 = 0
4*x-39+8 = 0
4*x-31 = 0
(4*x-31)/4 = 0
(4*x-31)/4 = 0 // * 4
4*x-31 = 0
4*x-31 = 0 // + 31
4*x = 31 // : 4
x = 31/4
x = 31/4
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