Question

(-5/14)×21/25-y=3.3/4

Answer 1

Ответ:

Пошаговое объяснение:

(-5/14)×21/25-y=3.3/4

-3/10-у=3 3/4

-у=3 3/4+3/10

-У=3 15/20+6/20

-у=4 1/20

У=-4 1/20

Answer 2

_________________________

Answer 3

To solve the equation for y, follow these steps:

Step 1: Simplify the left side of the equation. Step 2: Isolate y on one side of the equation. Step 3: Compute the value of y.

Let's start with Step 1:

(-5/14) × (21/25) - y = 3.3/4

Step 1: Simplify the left side.

(-5/14) × (21/25) can be simplified as follows: (-5/14) × (21/25) = -105/350 = -3/10

Now the equation becomes:

-3/10 - y = 3.3/4

Step 2: Isolate y on one side.

To isolate y, let's get rid of the term (-3/10) from the left side. To do this, we can add (3/10) to both sides of the equation:

-3/10 + (3/10) - y = 3.3/4 + (3/10)

On the left side, -3/10 and +(3/10) cancel each other out, leaving us with:

-y = 3.3/4 + 3/10

Step 3: Compute the value of y.

Now, combine the fractions on the right side:

3.3/4 + 3/10

To add fractions, you need a common denominator. In this case, the common denominator is 20. So, convert the fractions:

3.3/4 = (3.3 * 5) / (4 * 5) = 16.5/20 3/10 = (3 * 2) / (10 * 2) = 6/20

Now, add the fractions:

16.5/20 + 6/20 = 22.5/20

Now the equation becomes:

-y = 22.5/20

To solve for y, divide both sides by -1:

y = -(22.5/20)

Now, divide the numerator and denominator by their greatest common divisor (GCD) to simplify the fraction:

GCD(22.5, 20) = 2.5

y = - (22.5 / 2.5) = -9

So, the value of y is -9.