7a+4=67

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Solution for 7a+4=67 equation: 


a in (-oo:+oo)

7*a+4 = 67 // - 67

7*a-67+4 = 0

7*a-63 = 0 // + 63

7*a = 63 // : 7

a = 63/7

a = 9

a = 9

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