7a+8=15

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Solution for 7a+8=15 equation: 


a in (-oo:+oo)

7*a+8 = 15 // - 15

7*a-15+8 = 0

7*a-7 = 0 // + 7

7*a = 7 // : 7

a = 7/7

a = 1

a = 1

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