Question

Решите уравнение: 8(5-3х) = 6(2-4х) + 7 За 5 шоколадок и 6 леденцов заплатили 340 р. Шоколадка дороже леденца на 35 рублей. Сколько рублей стоит шоколадка и леденец? решите пожалуйста мои хорошие, я очень благодарна буду❤️​

Answer 1

Ответ:

леденец 15, шоколадка 50

Пошаговое объяснение:

5∗(x+35)+6x=340;

5x+175+6x=340;

11x=340−175;

11x=165;

x=165:11;

x=15

15+35 = 50 (руб) - стоит шоколадка

Answer 2

Ответ:

Пошаговое объяснение:
8(5 - 3х) = 6(2 - 4х) + 7
40 - 24х = 12 - 24х + 7
40 - 24х = 19 - 24х
40 = 19
Утверждение ложно для любого значения х
х € ∅


1 Шоколадка = х рублей
1 Леденец = у рублей

5х + 6у = 340
х - у = 35

5х + 6у = 340
х = 35 + у

1)
5х + 6у = 340
5(35 + у) + 6у = 340
175 + 5у + 6у = 340
5у+ 6у = 340 - 175
11у = 165
у = 165 : 11
у = 15

2)
х = 35 + у
х = 35 + 15
х = 50

1 шоколадка = (х) = 50 рублей
1 леденец = (у) = 15 рублей

5*50 + 6*15 = 250 + 90 = 340 - стоят 5 шоколадок и 6 леденцов
50 - 15 = 35 - стоит больше шоколадка

Answer 3

Solving the Equation:

To solve the equation 8(5-3x) = 6(2-4x) + 7, we can follow these steps:

Step 1: Distribute the multiplication on both sides of the equation: 40 - 24x = 12 - 24x + 7

Step 2: Combine like terms on both sides of the equation: 40 - 24x = 19 - 24x

Step 3: Simplify the equation by canceling out the common terms: -24x + 24x = 19 - 40

Step 4: Solve for x: 0 = -21

The equation 0 = -21 is not true, which means there is no solution to this equation. Therefore, the equation has no valid solution.

Calculating the Cost of Chocolate and Lollipops:

To calculate the cost of the chocolate and lollipops, we can use the given information:

- The total cost of 5 chocolates and 6 lollipops is 340 rubles. - The chocolate is 35 rubles more expensive than the lollipop.

Let's assume the cost of a lollipop is x rubles. Then, the cost of a chocolate would be (x + 35) rubles.

The total cost can be expressed as an equation: 5(x + 35) + 6x = 340

Simplifying the equation: 5x + 175 + 6x = 340 11x + 175 = 340

Subtracting 175 from both sides: 11x = 165

Dividing both sides by 11: x = 15

Therefore, the cost of a lollipop is 15 rubles, and the cost of a chocolate is (15 + 35) = 50 rubles.

So, the chocolate costs 50 rubles, and the lollipop costs 15 rubles.