7(3a-7)=-133

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Solution for 7(3a-7)=-133 equation: 


a in (-oo:+oo)

7*(3*a-7) = -133 // + 133

7*(3*a-7)+133 = 0

7*(3*a-7)+133 = 0

21*a+84 = 0

21*a+84 = 0

21*a+84 = 0 // - 84

21*a = -84 // : 21

a = -84/21

a = -4

a = -4

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