Question

Срочно #1345 чётные математика (фото)

Answer 1

1) -1,3/7-1/4 = -10/7-1/4 = -40/28-7/28 = -47/28 = -1,19/28;
2) 2,1/3 -3,4/9 = 7/3-28/9 = 21/9-28/9 = -7/9;
3) -5,3/4-(-2,1/9) = -23/4+19/9 = -207/36+76/36 = -131/36 = -3,23/36;
4) -5,9-0 = -5,9;
5) 1-(-2,7) = 1+2,7 = 3,7;
6) 5-6,2/3 = -1,2/3.