Can someone me with my homework i don't get it

#12 find the value of x. #13 find the value of the variable.

1234567891011 match the reasons with the statements in the proof. given: j | | k m 1 = m 3 prove: l | | m 1. j||k, m∠3 = m∠1 if lines are ||, then corresponding angles are =. 2. m∠1 = m∠2 if alternate interior angles are =, then lines are ||. 3. m∠2 = m∠3 substitution 4. l||m given

This question awards 100 ! i really don’t want to fail i will also mark you !