Question

Раскройте скобкии и найдите значение выражения -1,25-(6,5 (-1,5(-2 1/3+3 7/12

Answer 1

-1,25-(6,5 (-1,5(-2 1/3+3 7/12)))=-1,25-(6,5(-1,5(-7/3+43/12)))=-1,25-(6,5(-1,5(-28/12+43/12))) =-1,25-(6,5(-1,5×15/12))= -1,25-(6,5(-3/2×15/12))=-1,25-(6,5×(-15/8))= -1,25-(13/2×(-15/8))=-1 1/4-(-195/16)= -9/4+195/16=195/16-36/16=159/16=9 15/16