20 points, 2 questions ( answer with both explanations )

Write the pair of fractions as a pair of fractions with a common denominator

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.

What is the sum of these mixed numbers 4 2/3+ 3 1/9