21+a/3=10

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Solution for 21+a/3=10 equation: 


a in (-oo:+oo)

a/3+21 = 10 // - 10

a/3-10+21 = 0

1/3*a+11 = 0 // - 11

1/3*a = -11 // : 1/3

a = -11/1/3

a = -33

a = -33

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