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(1/2)*(x+5.8)+3*(1/2)*(x+5.8)+x+x+5.8 = 246.2 // - 246.2
(1/2)*(x+5.8)+3*(1/2)*(x+5.8)+x+x-246.2+5.8 = 0
1/2*(x+5.8)+3/2*(x+5.8)+x+x-246.2+5.8 = 0
1/2*(x+5.8)+3/2*(x+5.8)+x+x-246.2+5.8 = 0
2*x+x+x-246.2+5.8+11.6 = 0
3*x+x-246.2+5.8+11.6 = 0
4*x-246.2+5.8+11.6 = 0
4*x-234.6+5.8 = 0
4*x-228.8 = 0
4*x-228.8 = 0
4*x-228.8 = 0 // + 228.8
4*x = 228.8 // : 4
x = 228.8/4
x = 57.2
x = 57.2
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