Question

12-3x=7 14-(x-2)=23 34(x-2)=2

Answer 1

Ответ:

1) х=1целая 2/3

2) х=11

3) х=19

Пошаговое объяснение:

1. 3х=12-7
2. 3х=5
3. х=5:3
4. х=1 целая 2/3

1. х-2=23-14
2. х-2=9
3. х=9+2
4. х=11

1. х-2=34:2
2. х-2=17
3. х=17+2
4. х=19

Answer 2

Let's solve each equation step by step:

1. 12 - 3x = 7

To solve for x, we need to isolate x on one side of the equation. Here's how you can do it:

Step 1: Move the constant term to the other side of the equation by subtracting 12 from both sides: 12 - 12 - 3x = 7 - 12 -3x = -5

Step 2: Now, isolate x by dividing both sides by -3: x = -5 / -3 x = 5/3 or approximately 1.67

So, the solution to the first equation is x = 5/3 or 1.67.

2. 14 - (x - 2) = 23

Step 1: Simplify the expression inside the parentheses: 14 - x + 2 = 23

Step 2: Combine like terms: 16 - x = 23

Step 3: Isolate x by subtracting 16 from both sides:

• x = 23 - 16
• x = 7

Step 4: Multiply both sides by -1 to get the positive value of x: x = -7

The solution to the second equation is x = -7.

3. 34(x - 2) = 2

Step 1: Distribute the 34 on the left side of the equation: 34x - 68 = 2

Step 2: Move the constant term to the other side of the equation by adding 68 to both sides: 34x = 2 + 68 34x = 70

Step 3: Isolate x by dividing both sides by 34: x = 70 / 34 x = 35 / 17 or approximately 2.06

So, the solution to the third equation is x = 35/17 or approximately 2.06.

To summarize:

1. 12 - 3x = 7 -> x = 5/3 or 1.67
2. 14 - (x - 2) = 23 -> x = -7
3. 34(x - 2) = 2 -> x = 35/17 or approximately 2.06