Question

1 + (-1 7/9) . -2 1/3 + (-1 7/9). Дам 40 балов пж

Answer 1

1) 1+(-1 7/9) = 1 - 1 7/9 = 1 - 16/9 = -7/9
2) -2 1/3 + (-1 7/9) = -2 1/3 - 1 7/9 = -( 2 1/3 + 1 7/9)= -(3 + 10/9) = - (3 + 1 1/9) = -(3+1 + 1/9) = -(4 + 1/9) = -4 1/9