Question

1 .3*(7x-4=4x-3 2.4*(5-3a)-7a+3= 3. 2⁴*2и шесть маленькая. И под ними там есть черта и там тоже чифры (2³)²= 4.7²(7³)-⁴*49⁴= Помогите пж

Answer 1

3*(7x-4)=4x-3
21х-12=4х-3
21х-4х=-3+12
17х=9
х=9\17

Answer 2

1. To solve the equation 1.3*(7x-4) = 4x-3, we can follow these steps:

2. Distribute the 1.3 to both terms inside the parentheses: 9.1x - 5.2 = 4x - 3

3. Move the terms with x to one side of the equation by subtracting 4x from both sides: 9.1x - 4x - 5.2 = -3

4. Combine like terms: 5.1x - 5.2 = -3

5. Add 5.2 to both sides of the equation: 5.1x = 2.2

6. Divide both sides by 5.1 to isolate x: x = 2.2 / 5.1

So the solution to the equation is x ≈ 0.431.

2. To solve the equation 4*(5-3a) - 7a + 3 = 0, we can follow these steps:

3. Distribute the 4 to both terms inside the parentheses: 20 - 12a - 7a + 3 = 0

4. Combine like terms: -19a + 23 = 0

5. Subtract 23 from both sides of the equation: -19a = -23

6. Divide both sides by -19 to isolate a: a = -23 / -19

Simplifying the fraction, we have a ≈ 1.211.

3. The expression (2³)² can be simplified as follows:

2³ = 2 * 2 * 2 = 8

Now, substitute 8 back into the expression:

(8)² = 8 * 8 = 64

So, (2³)² is equal to 64.

4. Let's simplify the expression 4.7²(7³) - ⁴*49⁴ step by step:

First, calculate 4.7²: 4.7 * 4.7 = 22.09

Next, calculate 7³: 7 * 7 * 7 = 343

Now, substitute the calculated values back into the expression:

22.09 * 343 - ⁴ * 49⁴

Since 49⁴ means 49 * 49 * 49 * 49, we can simplify it:

49 * 49 = 2401 2401 * 2401 = 5,764,801

Now substitute the calculated values back into the expression:

22.09 * 343 - ⁴ * 5,764,801

Finally, calculate the exponent ⁴ (raising a number to the power of -4):

1 / (5,764,801 * 5,764,801 * 5,764,801 * 5,764,801) ≈ 3.166 × 10^(-15)

Now, substitute the calculated values back into the expression:

22.09 * 343 - 3.166 × 10^(-15)

Performing the multiplication:

7,570.87 - 3.166 × 10^(-15)

The result is approximately 7,570.87.