7a+1+4a=122

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Solution for 7a+1+4a=122 equation: 


a in (-oo:+oo)

7*a+4*a+1 = 122 // - 122

7*a+4*a-122+1 = 0

11*a-121 = 0 // + 121

11*a = 121 // : 11

a = 121/11

a = 11

a = 11

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