Question

Question #7e94a

Answer 1

The answer is 19.3 degrees? (question not clear)

Explanation:

Since all other angles are in terms of angle A, it can be a variable, let it be `a`.

Angle A is `a`, of course
Angle B is `4a`; it is 4 times angle A
Angle C is `5a-13`; 13 less 5 times angle A

Triangle Sum \Theorem on degrees: `A+B+C = 180`

Here it is
`a+4a+5a-13=180`

Algebra
`10a=193`
`a=19.3`

So, `a` representing Angle A is 16.7 degrees.
To find the others, just plug them in to their corresponding expression in the original problem.

`B=4a` ...so ... `B=77.2`
`C=5a-13` ...so... `C=83.5`