Question

№ 3. Решите уравнение: 3х - 17 =22; 144+2х=232; 3) 21х + 5х = 312.

Answer 1

Пошаговое объяснение:

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Answer 2

ОТВЕТ.

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1) 3х-17= 22

3х=22+17

3х=39

х= 13

2) 144+2х=232

2х=232-144

2х=88

х= 44

3) 21х + 5х = 312

26х=312

х= 12

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Желаю удачи.

Answer 3

1. 3x - 17 = 22:

To solve this equation, we will isolate the variable x by performing inverse operations.

Adding 17 to both sides of the equation:

3x - 17 + 17 = 22 + 17

Simplifying:

3x = 39

Dividing both sides of the equation by 3:

3x/3 = 39/3

Simplifying:

x = 13

Therefore, the solution to the equation 3x - 17 = 22 is x = 13.

2. 144 + 2x = 232:

To solve this equation, we will isolate the variable x by performing inverse operations.

Subtracting 144 from both sides of the equation:

144 + 2x - 144 = 232 - 144

Simplifying:

2x = 88

Dividing both sides of the equation by 2:

2x/2 = 88/2

Simplifying:

x = 44

Therefore, the solution to the equation 144 + 2x = 232 is x = 44.

3. 21x + 5x = 312:

To solve this equation, we will combine like terms on the left side and then isolate the variable x.

Combining like terms:

21x + 5x = 312

26x = 312

Dividing both sides of the equation by 26:

26x/26 = 312/26

Simplifying:

x = 12

Therefore, the solution to the equation 21x + 5x = 312 is x = 12.