Question

-(-x)+(-2,05)=-3 2/5

Answer 1

Давайте розв'яжемо це рівняння разом:

-(-x) означає x, тому ми можемо замінити це в рівнянні:

x + (-2.05) = -3 2/5

Знайдемо спочатку десятковий дріб для правої частини рівняння:

2/5 = 0.4

Тепер можемо замінити -3 2/5 на його десятковий еквівалент:

-3.4

Тепер наше рівняння виглядає так:

x - 2.05 = -3.4

Додамо 2.05 до обох боків, щоб отримати x окремо:

x - 2.05 + 2.05 = -3.4 + 2.05

x = -1.35

Отже, розв'язок рівняння: x = -1.35

Answer 2

Ответ:

-1.35

Пошаговое объяснение:

-(-х)+(-2.05)=-3 2/5

х-2.05 = -3 2/5

х = -3.4+2.05

х = -1.35

Answer 3

Let's solve the equation step by step:

-(-x) means the negation of x, which is equivalent to x. So the equation becomes:

x + (-2.05) = -3 2/5

Next, we can simplify the mixed number on the right side of the equation:

-3 2/5 can be rewritten as -3 - 2/5. To subtract 2/5 from -3, we need to find a common denominator. The common denominator between 5 and 1 is 5, so we can rewrite the equation as:

x - 2.05 = -3 - (2/5) = -3 - (2 * 1)/5 = -3 - 2/5 = -3 - 2/5 = -15/5 - 2/5 = -17/5

Now, we have the equation:

x - 2.05 = -17/5

To isolate x, we can add 2.05 to both sides of the equation:

x - 2.05 + 2.05 = -17/5 + 2.05

Simplifying the right side:

-17/5 + 2.05 = -17/5 + (2.05 * 5)/5 = -17/5 + 10.25/5 = (-17 + 10.25)/5 = -6.75/5

The equation becomes:

x = -6.75/5 + 2.05

To add fractions, we need a common denominator. The common denominator between 5 and 100 is 100, so we can rewrite the equation as:

x = (-6.75/5) * (20/20) + (2.05 * 20)/20 = -135/100 + 41/20

Simplifying further:

-135/100 + 41/20 = (-135 * 2)/(100 * 2) + 41/20 = -270/200 + 41/20 = (-270 + 410)/200 = 140/200

The fraction can be simplified by dividing the numerator and denominator by their greatest common divisor, which is 20:

140/200 = (140/20) / (200/20) = 7/10

So, the solution to the equation is:

x = 7/10