Question

6-13 1/4 : 1 -0.8 -9 4/5

Answer 1

6-13 1/4 : 1 -0.8 -9 4/5=-17,85

1) 13,25:1=13,25

2) 6-13,25=-7,25

3) -7,25-0,8=-8,05

4) -8,05-9,8=-17,85

Ответ: -17,85

Answer 2

To simplify this expression, we can follow the order of operations, which is Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).

6-13 1/4 : 1 -0.8 -9 4/5

= 6 - (13 + 1/4) : 1 - 0.8 - (9 + 4/5) (Substituting division with multiplication by the reciprocal)

= 6 - (52/4 + 1/4) : 1 - 0.8 - (45/5 + 4/5) (Converting mixed fractions to improper fractions)

= 6 - (53/4) : (1 - 9/10 - 49/5)

= 6 - (53/4) : (-41/10)

= 6 - (53/4) x (-10/41) (Dividing by a fraction is the same as multiplying by its reciprocal)

= 6 + (530/164)

= (984/164) + (530/164)

= 1514/164

= 9 110/164

Therefore, 6-13 1/4 : 1 -0.8 -9 4/5 simplifies to 9 110/164.