2/5 g - 1/6 - g + 3/10 g - 4/5

la solución es - 4/15

Step-by-step explanation:

2/5-1/6+3/10-4/5

((2*6) - (5*1)) / ((5*6)) + ((3*5) - (10*4)) / ((10*5)) = (12-5) / 30 + (15-40) / 50=7/30 + (-25) / 50=7/30-1/2 = ((7*2) - (30*1)) / ((30*2)) = (14-30) / 60 = (-16) / 60=-4/15