Question

45:X+9=1856:x+10=1781=X+21=30​

Answer 1

Ответ:

Пошаговое объяснение:

45:X+9=18

45:х=18-9

45:х=9

Х=45:9

Х=5

56:x+10=17

56:х=17-10

56:х=7

Х=56:7

Х=8

Answer 2

Ответ:

1. х = 5

2. х = 8

3. х = 9

Пошаговое объяснение:

1. 45:X+9=18

х = 45 : (18 - 9)

х = 45 : 9

х = 5

2. 56:x+10=17

х = 56 : (17 - 10)

х = 56 : 7

х = 8

3. 81:X+21=30​

х = 81 : (30 - 21)

х = 81 : 9

х = 9

Answer 3

It seems like you've provided three equations with variables. Let's solve them one by one:

1. 45:X + 9 = 185
2. 56:X + 10 = 178
3. X + 21 = 30

Equation 1: 45:X + 9 = 185

To solve for X, you can follow these steps:

1. Subtract 9 from both sides: 45:X = 176
2. Divide both sides by 45: X = 176 / 45 ≈ 3.9111

Equation 2: 56:X + 10 = 178

To solve for X, you can follow these steps:

1. Subtract 10 from both sides: 56:X = 168
2. Divide both sides by 56: X = 168 / 56 = 3

Equation 3: X + 21 = 30

To solve for X, you can follow these steps:

1. Subtract 21 from both sides: X = 30 - 21 = 9

So, the solutions for the equations are approximately:

1. X ≈ 3.9111
2. X = 3
3. X = 9