exam Maths Puzzle Numerical Ability

Write the standard equation for each ellipse and identify the coordinates of the center, foci, vertices, and co-vertices.

{{{ x^2+4y^2+6x-8y=3 }}}

And

{{{ x^2+16y^2-64y=0

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exam Other Question

In a triangle, one angle is three times the measure of the second angle. The
third angle is twice the measure of the second angle. What is the measure of
each angle?

i do not understand this. PLease help me add or subtract and simplify.(If the denominator has 3 or more factors other than monomials it needs to be left factored.)

a-8b over a+b + a+13b over a+b