4/7+3a+4a=-86/21

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Solution for 4/7+3a+4a=-86/21 equation: 


a in (-oo:+oo)

3*a+4*a+4/7 = -86/21 // + -86/21

3*a+4*a+4/7-(-86/21) = 0

3*a+4*a+4/7+86/21 = 0

7*a+14/3 = 0 // - 14/3

7*a = -14/3 // : 7

a = -14/3/7

a = -2/3

a = -2/3

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