Question

2) 12x - 5.x - 48 = 71; 4) (9x + x): 4 = 70​

Answer 1

Решите уравнения

2. 12x - 5x - 48 = 71

4. (9x + x) : 4 = 70​

Ответ:

2. x = 17

4. x = 28

Пошаговое объяснение:

2. 12x - 5x - 48 = 71

Приводим подобные члены:

12x - 5x = 71 + 48

7x = 119

Находим x:

x = 119 : 7

x = 17

4. (9x + x) : 4 = 70

Приводим подобные члены:

9x + x = 70 * 4

10x = 280

Находим x:

x = 280 : 10

x = 28

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Answer 2

Let's solve these equations step by step:

2. 12x - 5x - 48 = 71

First, combine like terms on the left side of the equation:

(12x - 5x) - 48 = 71 7x - 48 = 71

Now, add 48 to both sides of the equation to isolate the variable:

7x - 48 + 48 = 71 + 48 7x = 119

Finally, divide both sides by 7 to solve for x:

7x/7 = 119/7 x = 17

So, the solution to the first equation is x = 17.

4. (9x + x) / 4 = 70

Combine the terms in the parentheses on the left side:

(9x + x) / 4 = 70 (10x) / 4 = 70

Now, multiply both sides of the equation by 4 to isolate the variable:

4 * ((10x) / 4) = 4 * 70 10x = 280

Finally, divide both sides by 10 to solve for x:

10x / 10 = 280 / 10 x = 28

So, the solution to the second equation is x = 28.