Solve the inequality 4(a+6) ≥ 5(a+3)

I'll help you out a little bit
first of all, distribute the number next to the parenthesis to the numbers inside
so...
4a + 20 ≥ 5a + 15
then you will subtract the 15 from one side to another
4a + 5 ≥ 5a
then subtract 4a from the left side to the right
5 ≥ a

There you have it! 
Hope this helps :)

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)