Question

(1целая 1\4*2,6-4):1,2+0,3

Answer 1

(1 1\4*2,6-4):1,2+0,3=(1,25*2,6-4):1,2+0,3=(3,25-4):1,2+0,3=-0,75:1,2+0,3 =-0,625+0,3=-0,325

Answer 2

1)1 1/4*2,6=5/4*26/10=13/4=3 1/4
2)3 1/4-4=-1 1/4
3)1 1/4:1,2=5/4*10/12=25/24
4)25/24+0,3=25/24+3/10=322/240=161/120=1 41/120-это ответ

Answer 3

To simplify this expression, we need to follow the order of operations, also known as PEMDAS (parentheses, exponents, multiplication and division, addition and subtraction):

1. First, we need to evaluate the multiplication and division within the parentheses:

   1 1/4 * 2.6 = 3.25 * 2.6 = 8.45

   Note: 1 1/4 is equivalent to 5/4 in fraction form, and 5/4 multiplied by 2.6 is 13/4 * 26/10 = 338/40 = 8.45 in decimal form.

   Then, (8.45 - 4) = 4.45.

2. Next, we need to evaluate the addition and subtraction outside of the parentheses:

   4.45 ÷ (1.2 + 0.3) = 4.45 ÷ 1.5 = 2.97

   Therefore, the final answer is 2.97.