Question

4. Po3B'Aku piBHAHHA: a) 6) x - 15/23 = 21/23 3/7 + x = 5/7

Answer 1

Пошаговое объяснение:

$x - \frac{15}{23} = \frac{21}{23} \\ x = \frac{21}{23} + \frac{15}{23} \\ x = \frac{36}{23}$

$\frac{3}{7} + x = \frac{5}{7} \\ x = \frac{5}{7} - \frac{3}{7} \\ x = \frac{2}{7}$

Answer 2

To solve the equations, let's start with equation (a):

x - 15/23 = 21/23

To isolate the variable x, we can add 15/23 to both sides of the equation:

x - 15/23 + 15/23 = 21/23 + 15/23

This simplifies to:

x = 36/23

Now, let's move on to equation (b):

3/7 + x = 5/7

To isolate the variable x, we can subtract 3/7 from both sides of the equation:

3/7 + x - 3/7 = 5/7 - 3/7

This simplifies to:

x = 2/7

Therefore, the solutions to the equations are:

For equation (a): x = 36/23 For equation (b): x = 2/7