Question

2,8+1,7/3,5-2,6=? 17,5-5,9/4,7-1,8=?

Answer 1

2,8+1,7/3,5-2,6=2,8+0,48-2,6=3,28-2,6=0,68 
17,5-5,9/4,7-1,8=17,5-1,25-1,8=16,25-1.8=14,45

Answer 2

первое
1)2,8+1,7=4,5
2)3,5-2,6=0.9
3)4,5/0,9=5.
второе
1)17,5-5,9=11,6
2) 17,5-5,9=2,9
3)11,6/2,9=4

Answer 3

To solve the given equations, let's break down the steps one by one.

1. 2.8 + 1.7 / 3.5 - 2.6

First, we perform the division: 1.7 / 3.5 = 0.4857 (rounded to four decimal places).

Now, substituting the division result back into the equation: 2.8 + 0.4857 - 2.6

Next, we add and subtract from left to right: 2.8 + 0.4857 - 2.6 = 3.2857 - 2.6

Finally, subtracting: 3.2857 - 2.6 = 0.6857 (rounded to four decimal places).

Therefore, 2.8 + 1.7 / 3.5 - 2.6 = 0.6857.

2. 17.5 - 5.9 / 4.7 - 1.8

Following the same steps as above, let's solve this equation.

First, perform the division: 5.9 / 4.7 = 1.2553 (rounded to four decimal places).

Now, substituting the division result back into the equation: 17.5 - 1.2553 - 1.8

Next, perform the subtraction from left to right: 17.5 - 1.2553 - 1.8 = 16.2447 - 1.8

Finally, subtracting: 16.2447 - 1.8 = 14.4447 (rounded to four decimal places).

Therefore, 17.5 - 5.9 / 4.7 - 1.8 = 14.4447.