2=(81-x)/3

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Solution for 2=(81-x)/3 equation: 


x in (-oo:+oo)

2 = (81-x)/3 // - (81-x)/3

2-((81-x)/3) = 0

(-1*(81-x))/3+2 = 0

(-1*(81-x))/3+(2*3)/3 = 0

2*3-1*(81-x) = 0

x-75 = 0

(x-75)/3 = 0

(x-75)/3 = 0 // * 3

x-75 = 0

x-75 = 0 // + 75

x = 75

x = 75

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