Question

-4/9 + 5/6=? -6 -(- 2 3/4) = ? (-7)-(3)+(-5)- 4,3=? (-3)+х-(-5)= -4 решите уравнение |3-х|= 5?

Answer 1

Ответ:

-4/9 + 5/6= -7

-6 -(3 3/4)= -2

(-7)-(3)+(-5)-4,3= 1,3

Решение уравнений я могу но я в коментах через час дам ответ на решение уравннние. можно лутший ответ? можна на меня подписатся?

Answer 2

Let's solve each equation step by step:

1. To solve the equation -4/9 + 5/6, we need to find a common denominator. The least common multiple of 9 and 6 is 18.

• Multiply the numerator and denominator of -4/9 by 2: (-4 * 2) / (9 * 2) = -8/18
• Multiply the numerator and denominator of 5/6 by 3: (5 * 3) / (6 * 3) = 15/18

Now the equation becomes: -8/18 + 15/18

• Combine the numerators: (-8 + 15) / 18 = 7/18

Therefore, -4/9 + 5/6 = 7/18.

2. To solve the equation -6 - (-2 3/4), we need to subtract a negative number. This is equivalent to adding the positive value.

• Convert -2 3/4 to an improper fraction: -2 3/4 = -11/4

Now the equation becomes: -6 + 11/4

• Convert -6 to a fraction with a common denominator of 4: -6 = -24/4

Now the equation becomes: -24/4 + 11/4

• Combine the numerators: (-24 + 11) / 4 = -13/4

Therefore, -6 - (-2 3/4) = -13/4.

3. To solve the equation (-7) - (3) + (-5) - 4.3, we simply need to perform the arithmetic operations from left to right:

-7 - 3 + (-5) - 4.3 = -10 + (-5) - 4.3 = -10 - 5 - 4.3 = -15 - 4.3 = -19.3

Therefore, (-7) - (3) + (-5) - 4.3 = -19.3.

4. To solve the equation (-3) + x - (-5) = -4, we need to simplify and isolate the variable:

First, simplify the double negative: (-3) + x + 5 = -4

Combine like terms: x + 2 = -4

Isolate the variable: x = -4 - 2 x = -6

Therefore, the solution to the equation (-3) + x - (-5) = -4 is x = -6.

5. To solve the equation |3 - x| = 5, we need to consider both the positive and negative cases.

Positive case: 3 - x = 5 -x = 5 - 3 -x = 2 x = -2 (multiply both sides by -1)

Negative case: -(3 - x) = 5 -3 + x = 5 x = 5 + 3 x = 8

Therefore, the solutions to the equation |3 - x| = 5 are x = -2 and x = 8.