2.5=42.1-u/2 - solution

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Solution for 2.5=42.1-u/2 equation:

u in (-oo:+oo)

2.5 = 42.1-(u/2) // - 42.1-(u/2)

u/2-42.1+2.5 = 0

1/2*u-39.6 = 0 // + 39.6

1/2*u = 39.6 // : 1/2

u = 39.6/1/2

u = 79.2

u = 79.2

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