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1.96 = (x-31)/5 // - (x-31)/5
1.96-((x-31)/5) = 0
(-1*(x-31))/5+1.96 = 0
(-1*(x-31))/5+(1.96*5)/5 = 0
1.96*5-1*(x-31) = 0
40.8-x = 0
(40.8-x)/5 = 0
(40.8-x)/5 = 0 // * 5
40.8-x = 0
40.8-x = 0 // - 40.8
-x = -40.8 // * -1
x = 40.8
x = 40.8
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