Question

Решите уравнение : 1,2x + 4,5x - 0,7 = 1,01Решите задачу(ОБЯЗАТЕЛЬНО КРАТКУЮ ЗАПИСЬ) : Масса портфеля с книгами 6,2кг ,а масса пустого портфеля в 14,5 раза меньше массы книг .Какова масса книг ?

Answer 1

1. 5.7х=1.71 х=0.03 2. 1)найдём массу пустого портфеля. 6.2/14.5= 428 грамм(0.428) 2)найдём массу книг. 6200 грамм-428 грамм=5772 грамма=5.772 кг

Answer 2

Solving the Equation:

To solve the equation: 1.2x + 4.5x - 0.7 = 1.01, we can combine like terms on the left side and then isolate the variable x.

1.2x + 4.5x - 0.7 = 1.01 (1.2 + 4.5)x - 0.7 = 1.01 5.7x - 0.7 = 1.01

Next, we can add 0.7 to both sides of the equation to eliminate the constant term on the left side:

5.7x - 0.7 + 0.7 = 1.01 + 0.7 5.7x = 1.71

Finally, we can divide both sides of the equation by 5.7 to solve for x:

5.7x/5.7 = 1.71/5.7 x = 0.3

Therefore, the solution to the equation 1.2x + 4.5x - 0.7 = 1.01 is x = 0.3. [[1]]

Solving the Problem:

Let's solve the problem: "The mass of a bag with books is 6.2 kg, and the mass of an empty bag is 14.5 times less than the mass of the books. What is the mass of the books?"

Let's assume the mass of the books is represented by the variable "m".

According to the problem, the mass of the bag with books is 6.2 kg, and the mass of the empty bag is 14.5 times less than the mass of the books. This can be expressed as:

m + (14.5 * m) = 6.2

To solve for m, we can simplify the equation:

15.5m = 6.2

Next, we divide both sides of the equation by 15.5 to solve for m:

m = 6.2 / 15.5 m = 0.4 kg

Therefore, the mass of the books is 0.4 kg. [[2]]