Question

тание 3.Вычислите
1) -5/7+4/7
2) 5/12+(-1/12)
3) (-1/6)+1
4) 5/16+(-1/16)
5) (-4) + 3 1/2​

Answer 1

1) -5/7+4/7  = (-5+4)/7 = -1/7

2) 5/12+(-1/12)  = 5/12 - 1/12 = (5-1)/12 = 4/12 = 1/3

3) (-1/6)+1  = -1/6 + 6/6 = (-1+6)/6 = 5/6

4) 5/16+(-1/16)  = 5/16 - 1/16 = 4/16 = 1/4

5) (-4) + 3 1/2​ = (-4*2)/2 + (3*2+1)/2 = -8/2 + 7/2 = (-8+7)/2 = -1/2