Question

Y:12+15=21 2320-x:4=1990 1960-200:x=1910

Answer 1

Решения:

$1. \\ y \div 12 + 15 = 21 \\ \frac{y}{12} = \frac{6}{1} \\ y = 72 \\ \\ 2. \\ 2320 - 4 \div x = 1990 \\ - \frac{4}{x} = - \frac{330}{1} \\ 330x = 4 \\ x = \frac{2}{165} \\ \\ 3. \\ 1960-200 \div x=1910 \\ - \frac{200}{x} = - \frac{50}{1} \\ 50x = 200 \\ x = 4$

Answer 2

Решение:

y : 12 + 15 = 21

y = (21 - 15)*12

y = 72

Ответ:72

2320 - x : 4 = 1990

2320 - 1990 = x : 4

x = 330*4

x = 1320

Ответ:1320

1960 - 200 : x = 1910

1960 - 1910 = 200 : x

x = 200 : 50

x = 4

Ответ:4

Answer 3

Let's solve each equation step by step:

1. Y + 12 + 15 = 21 To solve for Y, we need to isolate it on one side of the equation. First, combine the numbers on the left side: Y + 27 = 21

Now, move the constant term (27) to the other side by subtracting it from both sides: Y = 21 - 27

Finally, calculate the result: Y = -6

2. 2320 - x / 4 = 1990 To solve for x, follow these steps: First, get rid of the constant term on the left side: 2320 - x / 4 = 1990

Next, move the constant term (2320) to the other side by subtracting it from both sides: -x / 4 = 1990 - 2320

Simplify the right side: -x / 4 = -330

To isolate x, multiply both sides by -4: x = -330 * -4

Calculate the result: x = 1320

3. 1960 - 200 / x = 1910 To solve for x, proceed as follows: First, get rid of the constant term on the left side: 1960 - 200 / x = 1910

Next, move the constant term (1960) to the other side by subtracting it from both sides: -200 / x = 1910 - 1960

Simplify the right side: -200 / x = -50

To isolate x, multiply both sides by x: -200 = -50x

Now, divide both sides by -50 to find the value of x: x = -200 / -50

Calculate the result: x = 4

So, the solutions to the given equations are: Y = -6 x = 1320 x = 4