3/10+x=4/10 - solution

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Solution for 3/10+x=4/10 equation:

x in (-oo:+oo)

x+3/10 = 4/10 // - 4/10

x+3/10-(4/10) = 0

x+3/10-2/5 = 0

x-1/10 = 0 // + 1/10

x = 1/10

x = 1/10

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