Question

1)-7-20=7-* 2)-9-*=*-8 3)*-30=29-* 4)*-51=*-49

Answer 1

1)-7-20=7-34
2)-9-1=-2-8
3)1-30=29-58
4)-1-51=-3-49

Answer 2

Let's solve each equation step by step:

1. -7 - 20 = 7 - * To find the value of *, we need to simplify the left side first: -7 - 20 = -27

So the equation becomes: 7 - * = -27

Now, to solve for *, we can rearrange the equation:

• = 7 - 27

• = -20

Therefore, the value of * is -20.

2. -9 - * = * - 8 To find the value of *, we need to simplify the equation step by step:

Step 1: Move the * terms to one side of the equation. -9 + 8 = * + *

Step 2: Combine like terms. -1 = 2*

Step 3: Divide by 2 to solve for *.

• = -1/2

Therefore, the value of * is -1/2.

3. • • 30 = 29 - * To find the value of *, we need to simplify the equation step by step:

Step 1: Move the * terms to one side of the equation.

• • • = 29 + 30

Step 2: Combine like terms. 2* = 59

Step 3: Divide by 2 to solve for *.

• = 59 / 2

• = 29.5

Therefore, the value of * is 29.5.

4. • • 51 = * - 49 This equation doesn't give us enough information to determine the value of *. Whatever * is, when you subtract 51 from it, it will be equal to * - 49. This means there are infinitely many possible values for * that satisfy this equation.

In conclusion:

1. • = -20
2. • = -1/2
3. • = 29.5
4. Infinite solutions for * (any value of * will satisfy the equation).