The sum of 8.93-2 and 11 / 7-1 and 11 / 1 times 23 / 4 + 23 / 4

The sum of 8.93-2 and 11 / 7-1 and 11 / 1 times 23 / 4 + 23 / 4

It seems that you should be a junior high school student. If you are a junior high school student, the equation is generally tested by merging and simplifying. ① your last one is a minus sign, which can simplify well: if it is a minus sign, the answer is 5.95. ② if it is a plus sign, split the last item into 4 / 23 = 8 / 23-4 / 23 for simplification, and the answer is about 9.278

(1) Simple calculation of 5 / 11 times 23 (2) (1 + 7 / 11) + (2 + 7 / 11 * 2) + (3 + 7 / 11 * 3) +. + (7 / 11 + 11)

(1) 5 out of 11 times 22 plus 5 out of 11 times 1 = 10 + 5 / 11 = 115 / 11
(2) The original formula = (1 + 2 + 3 +... + 11) + 7 / 11 * (1 + 2 + 3 +... + 11) = (1 + 11) * 11 / 2 + 7 / 11 * (1 + 11) * 11 / 2 = 66 + 42 = 108

To simplify the calculation, 4 / 5 △ 8-4 / 15 × 1 / 8 3 △ 6 / 7 △ 7 / 9
To simplify the calculation, 4 / 5 △ 8-4 / 15 × 1 / 8 3 △ 6 / 7 △ 7 / 9

4/5÷8-4/15×1/8
=4/5 x1/8 -4/15 x1/8
=(4/5-4/15)x1/8
=8/12 x 1/8
=1/12
3÷6/7÷7/9
=3x7/6x9/7
=3x(7/6x9/7)
=3x3/2
=9/2

Can 3.5 * (20.6-16.8 △ 4.8) be simplified?

3.5*(20.6-16.8÷4.8)
=3.5*（20.6-84/5*5/24)
=3.5*(20.6-3.5)
=3.5*17.1
=59.85