Question

Х+6=8; 9-у=4; 90-b=20; реши уровнения. Спс большое

Answer 1

Х+6=8
Х=8-6
Х=2
Ответ:2


9-У=4
У=9-4
У=5
Ответ:5


90-b=20
b=90-20
b=70
Ответ:70

Answer 2

8-6=2;
9-4=5;
90-20=70;

Answer 3

Solving the Equations

Let's solve the given equations step by step:

1. Equation: x + 6 = 8

To solve for x, we need to isolate x on one side of the equation. We can do this by subtracting 6 from both sides of the equation:

x + 6 - 6 = 8 - 6

This simplifies to:

x = 2

Therefore, the solution to the equation is x = 2.

2. Equation: 9 - y = 4

To solve for y, we need to isolate y on one side of the equation. We can do this by subtracting 9 from both sides of the equation:

9 - y - 9 = 4 - 9

This simplifies to:

-y = -5

To solve for y, we need to multiply both sides of the equation by -1 to get rid of the negative sign:

-y * -1 = -5 * -1

This simplifies to:

y = 5

Therefore, the solution to the equation is y = 5.

3. Equation: 90 - b = 20

To solve for b, we need to isolate b on one side of the equation. We can do this by subtracting 90 from both sides of the equation:

90 - b - 90 = 20 - 90

This simplifies to:

-b = -70

To solve for b, we need to multiply both sides of the equation by -1 to get rid of the negative sign:

-b * -1 = -70 * -1

This simplifies to:

b = 70

Therefore, the solution to the equation is b = 70.

To summarize, the solutions to the given equations are: - x = 2 - y = 5 - b = 70

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