Question

1Упростите выражение. а⋅27⋅5 35⋅с⋅2 2. Упростите выражение и найдите его значение при х=5; х=10. 36х+124+16х 3 В двух зрительных залах кинотеатра 624 места. В одном зале в 3 раза больше мест, чем в другом. Сколько мест в меньшем зрительном зале? 4. Решите уравнения. 9у-3у=666 3х+5х=1632 5.*У Лены столько же монет по 2 рубля, сколько и по 5 рублей. Все монеты составляют сумму 56 рублей. Сколько монет по 2 рубля у Лены? Задачи с x (иксами решить пожалуйста)

Answer 1

1     а*27*5*35*с*5=4725ас
2      36х+124+16х=42х+124
      х=5     42*5+124=334
3     х мест в одном зале , тогда 3х мест  в другом. Состовим уравнение:
х+3х=624
4х=624
х=156-мест в первом зале
3х=3*156=468-мест во втором зале
4   9у-3у=666                    3х+5х=1632
     6у=666                         8х=1632
     у=111                            х=204

 
      

Answer 2

3)Пусть в малом зале х мест, а во большом 3х мест. По условию задачи всего 624 места.
4х=624
х=624:4
х=156
Ответ: 156 мест в малом зале.
4)9у-3у=666
6у=666
у=666:6
у=111
Ответ: 111
3х+5х=1632
8х=1632
х=1632:8
х=204
Ответ:204

Answer 3

Simplify the expression: a⋅27⋅5 + 35⋅c⋅2 + 2

To simplify the expression, we can multiply the coefficients and combine like terms.

The simplified expression is: 135a + 70c + 2.

Simplify the expression and find its value for x = 5; x = 10: 36x + 124 + 16x + 3

To simplify the expression, we can combine like terms.

The simplified expression is: 52x + 127.

To find the value of the expression when x = 5, we substitute x = 5 into the expression: 52(5) + 127 = 260 + 127 = 387.

To find the value of the expression when x = 10, we substitute x = 10 into the expression: 52(10) + 127 = 520 + 127 = 647.

Therefore, when x = 5, the value of the expression is 387, and when x = 10, the value of the expression is 647.

In two cinema halls, there are a total of 624 seats. One hall has 3 times more seats than the other. How many seats are there in the smaller hall?

Let's assume the number of seats in the smaller hall is x.

According to the problem, the larger hall has 3 times more seats than the smaller hall. Therefore, the number of seats in the larger hall is 3x.

The total number of seats in both halls is given as 624. So we can write the equation:

x + 3x = 624

Simplifying the equation, we get:

4x = 624

Dividing both sides of the equation by 4, we find:

x = 156

Therefore, there are 156 seats in the smaller hall.

Solve the equations: 9u - 3u = 666, 3x + 5x = 1632

Let's solve the equations one by one:

1. 9u - 3u = 666

Combining like terms, we get:

6u = 666

Dividing both sides of the equation by 6, we find:

u = 111

Therefore, the solution to the equation 9u - 3u = 666 is u = 111.

2. 3x + 5x = 1632

Combining like terms, we get:

8x = 1632

Dividing both sides of the equation by 8, we find:

x = 204

Therefore, the solution to the equation 3x + 5x = 1632 is x = 204.

Lena has the same number of coins worth 2 rubles as she has coins worth 5 rubles. The total value of all the coins is 56 rubles. How many coins worth 2 rubles does Lena have?

Let's assume the number of coins worth 2 rubles is x.

According to the problem, Lena has the same number of coins worth 2 rubles as she has coins worth 5 rubles. Therefore, the number of coins worth 5 rubles is also x.

The total value of all the coins is given as 56 rubles. We can write the equation:

2x + 5x = 56

Simplifying the equation, we get:

7x = 56

Dividing both sides of the equation by 7, we find:

x = 8

Therefore, Lena has 8 coins worth 2 rubles.

I hope this helps! Let me know if you have any further questions.