145=7d+5d+1

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Solution for 145=7d+5d+1 equation: 


d in (-oo:+oo)

145 = 7*d+5*d+1 // - 7*d+5*d+1

145-(7*d)-(5*d)-1 = 0

145-7*d-5*d-1 = 0

144-12*d = 0 // - 144

-12*d = -144 // : -12

d = -144/(-12)

d = 12

d = 12

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