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How to get steps of the solutions for:
Solve[x^2 + y^2 == (r - 65)^2 && (x - 85)^2 + (y + 185)^2 == (r - 55)^2 && (x - 150)^2 + (y + 45)^2 == (r - 35)^2, {x, y, r}]
