Question

1) 3/8 - x = 1/12 И 2) (x - 5/7) - 0,3=2 7/5​

Answer 1

Ответ:

Пошаговое объяснение:

1)

х = 3/8 - 1/12

х = 9/24 - 2/24

х = 7/24

2)

х - 5,7 = 2 7/5 + 0,3

х - 5 7/10 = 3 2/7 + 3/10

х - 5 49/70 = 3 20/70 + 21/70

х - 5 49/70 = 3 41/70

х = 3 41/70 + 5 49/70

х = 8 90/70

х = 9 20/70

х = 9 2/7

Answer 2

Ответ:

1. х = 7/24

2. х = 4 29/70

Пошаговое объяснение:

1) 3/8 - x = 1/12

-х = 1/12 - 3/8

-х = -7/24

х = 7/24

2) (x - 5/7) - 0,3 = 2 7/5​ = 3 2/5

х - 5/7 - 3/10 = 17/5

х = 17/5 + 5/7 + 3/10

х = 4 29/70

Answer 3

To solve the given equations, we'll work through each step by step:

Equation 1: $\frac{3}{8} - x = \frac{1}{12}$

Step 1: Subtract $\frac{3}{8}$ from both sides to isolate $x$: $-x = \frac{1}{12} - \frac{3}{8}$

Step 2: Find a common denominator (in this case, 24) and subtract the fractions on the right-hand side: $-x = \frac{2}{24} - \frac{9}{24}$ $-x = -\frac{7}{24}$

Step 3: Multiply both sides by -1 to solve for $x$: $x = \frac{7}{24}$

So, the solution to Equation 1 is $x = \frac{7}{24}$.

---

Equation 2: $(x - \frac{5}{7}) - 0.3 = \frac{27}{5}$

Step 1: Subtract $0.3$ from both sides: $x - \frac{5}{7} = \frac{27}{5} + 0.3$

Step 2: Convert $0.3$ to a fraction with a denominator of 5: $x - \frac{5}{7} = \frac{27}{5} + \frac{3}{10}$

Step 3: Find a common denominator (in this case, 10) for the fractions on the right-hand side and add them: $x - \frac{5}{7} = \frac{54}{10} + \frac{3}{10}$ $x - \frac{5}{7} = \frac{57}{10}$

Step 4: Add $\frac{5}{7}$ to both sides to isolate $x$: $x = \frac{57}{10} + \frac{5}{7}$

Step 5: Find a common denominator (in this case, 70) for the fractions on the right-hand side and add them: $x = \frac{399}{70} + \frac{50}{70}$ $x = \frac{449}{70}$

So, the solution to Equation 2 is $x = \frac{449}{70}$.

---

To summarize:

1. $x = \frac{7}{24}$ is the solution to Equation 1.
2. $x = \frac{449}{70}$ is the solution to Equation 2.