4+7a=-45

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Solution for 4+7a=-45 equation: 


a in (-oo:+oo)

7*a+4 = -45 // + 45

7*a+4+45 = 0

7*a+49 = 0 // - 49

7*a = -49 // : 7

a = -49/7

a = -7

a = -7

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