
140 - (80 : (4 * 5)) = 136;
140 – 80 : 20 = 136;
140 - 4 = 136;
136 = 136.
8 * 30 – 30 : (3 * 5) = 238;
240 – 30 : 15 = 238;
240 - 2 = 238;
238 = 238.
8 * (30 - 30) : 3 * 5 = 0;
8 * 0 : 3 * 5 = 0;
0 = 0.
((8 * 30) - 30) : 3) * 5 = 350;
((240 - 30) : 3 * 5 = 350;
(210 : 3) * 5 = 350;
70 * 5 = 350;
350 = 350.