Question

1)5(х)=15; 2)7(-х)=35; 3(х)+4=8​

Answer 1

Ответ:

Пошаговое объяснение:

1)

5(х)=15;

x = 15:5

x = 3

2)7(-х)=35;

-x = 35:7

-x = 5

x = -5

3(х)+4=8​

3(x) = 8-4

3(x) = 4

x = 4:3

x = 1 1/3

Answer 2

Let's solve each equation step by step:

1. 5(x) = 15

To solve for x, we can divide both sides of the equation by 5: 5(x)/5 = 15/5 x = 3

So, the solution to the equation is x = 3.

2. 7(-x) = 35

We can simplify the equation by multiplying -x by 7: -7x = 35

To solve for x, we divide both sides of the equation by -7: (-7x)/(-7) = 35/(-7) x = -5

Therefore, the solution to the equation is x = -5.

3. 3(x) + 4 = 8

To solve for x, we can start by subtracting 4 from both sides of the equation: 3(x) + 4 - 4 = 8 - 4 3(x) = 4

Next, we divide both sides of the equation by 3: (3(x))/3 = 4/3 x = 4/3

So, the solution to the equation is x = 4/3 or 1.33 (rounded to two decimal places).

Therefore, the solutions to the given equations are:

1. x = 3
2. x = -5
3. x = 4/3 or x ≈ 1.33