9+7a-3a=1

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Solution for 9+7a-3a=1 equation: 


a in (-oo:+oo)

7*a-(3*a)+9 = 1 // - 1

7*a-(3*a)-1+9 = 0

7*a-3*a-1+9 = 0

4*a+8 = 0 // - 8

4*a = -8 // : 4

a = -8/4

a = -2

a = -2

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