Question

ОТМЕЧУ ЛУЧШИМ
Вычислите:
-2/13-1/6
-3/8+1/2
1/3-2/5

Answer 1

-2/13-1/6= -12/78-13/78=-25/78
-3/8+1/2= -3/8+4/8= 1/8
1/3-2/5 = 5/15-6/15=-1/15

Answer 2

-2/13-1/6=-2*6/13*6-13/6*13=-12/78-13/78=-25/78
-3/8+1/2=-3/8+4/2*4=-3/8+4/8=1/8
1/3-2/5=5/3*5-2*3/5*3=5/15-6/15=-1/15