3. Solve. Check Your Solutions
z - 12 = 30

z = 42

Step-by-step explanation:

z - 12 = 30

Add 12 to each side

z - 12+12 = 30+12

z = 42

Check

42 - 12 = 30

30 = 30

Step-by-step explanation:

If we want to solve this algebraic equation, we need to isolate z on one side.

Add 12 to both sides:

To check our work, let's substitute 42 in as .

42 minus 12 is indeed 30.

Hope this helped!

A Pythagorean triple consists of three positive integers a, b, and c, such that a2 + b2 = c2. Such a triple is commonly written (a, b, c), and a well-known example is (3, 4, 5). However, right triangles with non-integer sides do not form Pythagorean triples.