Question

1)5x+4=21 2)-5x+4=21 3)5x=30 4)-5x=30 5)-x+1=6

Answer 1

1.3,4

2.-3,4

3.6

4.-6

5.-5

Answer 2

To solve these equations, we need to find the value of 'x' that satisfies each equation. Let's solve them one by one:

1. 5x + 4 = 21

Subtract 4 from both sides to isolate the term with 'x': 5x = 21 - 4 5x = 17

Now, divide both sides by 5 to solve for 'x': x = 17 / 5 x = 3.4

2. -5x + 4 = 21

Subtract 4 from both sides: -5x = 21 - 4 -5x = 17

Divide both sides by -5: x = 17 / -5 x = -3.4

3. 5x = 30

Divide both sides by 5 to solve for 'x': x = 30 / 5 x = 6

4. -5x = 30

Divide both sides by -5: x = 30 / -5 x = -6

5. -x + 1 = 6

Subtract 1 from both sides to isolate the term with 'x': -x = 6 - 1 -x = 5

Multiply both sides by -1 to solve for 'x': x = -5

So, the solutions for each equation are:

1. x = 3.4
2. x = -3.4
3. x = 6
4. x = -6
5. x = -5