Question

( х + 1 2/7 ) - 1 3/5 = 0,8​

Answer 1

Ответ: 1  4/35

Пошаговое объяснение:

х=0,8+1,6-1 2/7=2  2/5 -1 2/7=1  (14-10)/35=1  4/35

Answer 2

Ответ:

1 4/35

Пошаговое объяснение:

X=0,8 + 1 3/5 - 1 2/7

X=1 4/35

Answer 3

To solve the equation $(x + \frac{12}{7}) - \frac{13}{5} = 0.8$, follow these steps:

1. Start by simplifying the fractions on the left side of the equation:

$\frac{12}{7}$ can be converted to an improper fraction by multiplying 7 by 1 (since 7 is the denominator of the fraction) and adding 5 (the numerator):

$\frac{12}{7} = \frac{7}{7} + \frac{5}{7} = 1 + \frac{5}{7}$

So, the equation becomes:

$(x + 1 + \frac{5}{7}) - \frac{13}{5} = 0.8$

2. Now, combine the fractions on the left side:

$(x + 1 + \frac{5}{7}) - \frac{13}{5} = 0.8$

$x + \left(1 + \frac{5}{7}\right) - \frac{13}{5} = 0.8$

3. Add $1$ and $\frac{5}{7}$ together:

$\frac{5}{7} + 1 = \frac{5}{7} + \frac{7}{7} = \frac{5 + 7}{7} = \frac{12}{7}$

So, the equation becomes:

$x + \frac{12}{7} - \frac{13}{5} = 0.8$

4. Now, get a common denominator for $\frac{12}{7}$ and $\frac{13}{5}$, which is 35:

$\frac{12}{7} = \frac{12 \times 5}{7 \times 5} = \frac{60}{35}$

$\frac{13}{5} = \frac{13 \times 7}{5 \times 7} = \frac{91}{35}$

So, the equation becomes:

$x + \frac{60}{35} - \frac{91}{35} = 0.8$

5. Now, subtract $\frac{91}{35}$ from $\frac{60}{35}$:

$\frac{60}{35} - \frac{91}{35} = \frac{60 - 91}{35} = \frac{-31}{35}$

So, the equation is now:

$x + \frac{-31}{35} = 0.8$

6. To isolate $x$, subtract $\frac{-31}{35}$ from both sides of the equation:

$x + \frac{-31}{35} - \frac{-31}{35} = 0.8 - \frac{-31}{35}$

$x = 0.8 + \frac{31}{35}$