Question

реши 3 способами (310-180)*4

Answer 1

1) (310*4)-(180*4)=520
2) (310-180)*4=520
а 3 способа нету

Answer 2

1 способ:
(310 - 180) * 4 = 130 * 4 = 520

2 способ:
(310 - 180) * = 310 * 4 - 180 * 4 = 1.240 - 720 = 520

3 способ:
(310 - 180) * 4 = (310 - 110 - 70) * 4 = (200 - 70) * 4 = 800 - 280 = 520