7a-10=-80

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Solution for 7a-10=-80 equation: 


a in (-oo:+oo)

7*a-10 = -80 // + 80

7*a-10+80 = 0

7*a+70 = 0 // - 70

7*a = -70 // : 7

a = -70/7

a = -10

a = -10

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