Question

A-69=12+9 25+x=43+12 45-x=100-60

Answer 1

Ответ:

25+x=43+12

25+x=55

x=55-25

x=30

45-x=100-60

45-x=40

x=45-40

x=5

Answer 2

Ответ:

Пошаговое объяснение:

25+x=43+12

25+x=55

x=55-25

x=30

45-x=100-60

45-x=40

x=45-40

x=5

Answer 3

Let's solve each equation step by step:

1. A-69 = 12+9

To solve for A, we can start by simplifying the right side of the equation:

A - 69 = 21

Next, we can isolate A by adding 69 to both sides:

A = 21 + 69

A = 90

Therefore, A is equal to 90.

2. 25+x = 43+12

To solve for x, we can start by simplifying the right side of the equation:

25 + x = 55

Next, we can isolate x by subtracting 25 from both sides:

x = 55 - 25

x = 30

Therefore, x is equal to 30.

3. 45-x = 100-60

To solve for x, we can start by simplifying the right side of the equation:

45 - x = 40

Next, we can isolate x by subtracting 45 from both sides:

-x = 40 - 45

-x = -5

To solve for x, we can multiply both sides by -1:

x = -(-5)

x = 5

Therefore, x is equal to 5.

To summarize the solutions: A = 90 x = 30 x = 5