7+x-15=-21/2 - solution

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Solution for 7+x-15=-21/2 equation:

x in (-oo:+oo)

x-15+7 = -21/2 // + -21/2

x-(-21/2)-15+7 = 0

x+21/2-15+7 = 0

x+5/2 = 0 // - 5/2

x = -5/2

x = -5/2

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