Помогите 1) -379+948= 2) -0,81+0,66= 3) -5=(-2 3/7)= 4) 2/9+(-5/6)= 5)3 5/7+(-4 3/14)=...

Question

Помогите 1) -379+948= 2) -0,81+0,66= 3) -5=(-2 3/7)=
4) 2/9+(-5/6)= 5)3 5/7+(-4 3/14)= 6)-1,68+(-1,68)=

Answer 1

1) -379+948=569
2) -0,81+0,66=-0,15
3) -5+(-17/7)=-35-17/7=-52/7= -7 3/7
4) 2/9+(-5/6) = 12-45/6=-33/6=-5 3/6
5) 3 5/7 + (-4 3/14) = 26/7 + ( - 59/14 ) = 52-59/14=-7/14 = -1/2=-0,5
6) -1,68+( -1,68 ) =-3,36