Question

2/5-3/4(х+1/3) примерчик)

Answer 1

Ответ: -1,1

2/5 - 3/4( 5/3 + 1/3) = 0,4 - 0.75( 5/3 + 1/3) = 0,4 - 0,75 * 2 = 0,4 - 1,5 = -1,1

Answer 2

2/5 - 3/4 • (х + 1/3) = 2/5 - 3/4 • х - 3/4 • 1/3 = 0,4 - 0,75х - 3/12 = 0,4 - 0,75х - 0,25 = 0,15 - 0,75х
0,15 = 0,75х
х = 0,15 : 0,75
х = 0,2
Ответ: 0,2.

Answer 3

To solve the expression, let's break it down step by step:

1. Start by simplifying the expression inside the parentheses: (x + 1/3)

2. Multiply the fraction 3/4 with the simplified expression (x + 1/3): 3/4 * (x + 1/3)

3. Apply the distributive property to distribute 3/4 to both terms inside the parentheses: (3/4 * x) + (3/4 * 1/3)

4. Simplify the multiplication: (3/4 * x) + (1/4 * 1)

   Multiplying fractions: (3x/4) + (1/4)

5. Now subtract the fraction 2/5 from the simplified expression (3x/4 + 1/4): (3x/4 + 1/4) - 2/5

6. To subtract fractions, we need a common denominator. The least common denominator (LCD) of 4 and 5 is 20. We'll convert the fractions to have a denominator of 20: [(3x/4) * 5/5] + (1/4 * 5/5) - (2/5 * 4/4)

   Simplifying: (15x/20) + (5/20) - (8/20)

7. Combine the fractions: (15x + 5 - 8) / 20

   Simplifying: (15x - 3) / 20

So, the simplified expression is (15x - 3) / 20.