Three million, three hundred eighty eight thousand, one hundred ninety eight
7x-2=-23 add 2 to both sides to get 7x by itself
7x=-23+2 now add the right side
7x=-21 now divide both sides by 7
x=-21/7
x=-3
It’s 6
6 is the gcf between 18 & 30 & 36
6 • 3 = 18
6 • 5 = 30
6 • 6 = 36