Question

1) x - 2,76 = -4 2) x - 8 1/4 = -3,2 3) y - 2 7/9 = -8

Answer 1

1) х - 2,76 = - 4

х = - 4 + 2,76

х = - ( 4 - 2,76 )

х = - 1,24

2)

$x - 8 \frac{1}{4} = - 3.2$

$x - 8.25 = - 3.2$

$x = - 3.2 + 8.25$

$x = - (8.25 - 3.2)$

$x = - 5.05$

3)

$y - 2 \frac{7}{9} = - 8$

$y = - 8 + 2 \frac{7}{9}$

$y = - \frac{72}{9} + \frac{25}{9}$

$y = - ( \frac{72}{9} - \frac{25}{9})$

$y = - \frac{42}{9}$

$y = - \frac{14}{3}$

Answer 2

To solve each of these equations for their respective variables, you need to isolate the variable (x or y) on one side of the equation. Here are the steps for each equation:

1. x - 2.76 = -4

Step 1: Add 2.76 to both sides of the equation to isolate x. x - 2.76 + 2.76 = -4 + 2.76 x = -1.24

So, the solution to the first equation is x = -1.24.

2. x - 8 1/4 = -3.2

Step 1: Convert 8 1/4 to a decimal, which is 8.25. x - 8.25 = -3.2

Step 2: Add 8.25 to both sides of the equation to isolate x. x - 8.25 + 8.25 = -3.2 + 8.25 x = 5.05

So, the solution to the second equation is x = 5.05.

3. y - 2 7/9 = -8

Step 1: Convert 2 7/9 to a decimal, which is approximately 2.7778. y - 2.7778 = -8

Step 2: Add 2.7778 to both sides of the equation to isolate y. y - 2.7778 + 2.7778 = -8 + 2.7778 y = -5.2222

So, the solution to the third equation is y = -5.2222.