How do I an equivalent expression that uses only addition with this?

20-3x - 8y - 4 - 8/7z

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 165-pound man? 1.0 kg ca 5.1 kg ca 1.0 x 102 kg ca 5.1 x 102 kg ca

Using inductive reasoning, what are the next two number in this set? 2,3/2,4/3,5/4,