What is the inverse of the statement “if i like art class, then i like painting” ?

Solve |2x - 5| = 4 if anyone could , that would be great

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.