((2x + 16)/2)*10 = 150;
(2x + 16)/2 = 150 : 10;
(2x + 16)/2 = 15;
2x + 16 = 15 * 2;
2x + 16 = 30;
2x = 30 - 16;
2x = 14;
x = 7.
((2x + 16)/2)*10 = 150;
(2x + 16)/2 = 150 : 10;
(2x + 16)/2 = 15;
2x + 16 = 15 * 2;
2x + 16 = 30;
2x = 30 - 16;
2x = 14;
x = 7.