Question

1 3/4-у= 2 7/10 СРОЧНО НАДО РЕШИТЬ!!!!ПОМОГИТЕ!!!!​

Answer 1

Пошаговое объяснение:

$1 \frac{3}{4} - y = 2 \frac{7}{10}$

$\frac{7}{4} - y = \frac{27}{10}$

$- y = \frac{27}{10} - \frac{7}{4}$

$- y = \frac{54 - 35}{20}$

$y = - \frac{19}{20} = - 0.95$

Answer 2

Problem:

You need to solve the equation 1 3/4 - u = 2 7/10.

Solution:

To solve the equation, we need to isolate the variable u on one side of the equation. Let's break down the steps:

Step 1: Convert the mixed numbers to improper fractions. - 1 3/4 can be written as 7/4. - 2 7/10 can be written as 27/10.

Step 2: Subtract u from both sides of the equation. - 7/4 - u = 27/10

Step 3: To simplify the equation, find a common denominator for the fractions on both sides. The common denominator for 4 and 10 is 20. - Multiply the numerator and denominator of 7/4 by 5 to get 35/20. - Multiply the numerator and denominator of 27/10 by 2 to get 54/20.

Step 4: Rewrite the equation with the common denominator. - 35/20 - u = 54/20

Step 5: Subtract 35/20 from both sides of the equation. - -u = 54/20 - 35/20

Step 6: Subtract the fractions on the right side of the equation. - -u = (54 - 35)/20 - -u = 19/20

Step 7: Multiply both sides of the equation by -1 to isolate u. - u = -19/20

Answer:

The solution to the equation 1 3/4 - u = 2 7/10 is u = -19/20.