x+x-5 greater than or equal to < 33
x+x-5>=33
=> 2x-5>=33
let's add 5 to each part of the inequality:
2x-5+5>=33+5
or& 2x>=38
dividing each part of the inequality by 2 (sign of the inequality won't change cause 2>0) we obtain
x>=19 - answer of the question