Examples with solutions for Solving Equations Using All Methods: Addition, subtraction, multiplication and division

Exercise #1

5x=0 5x=0

Video Solution

Step-by-Step Solution

To solve the equation 5x=0 5x = 0 for x x , we will use the following steps:

  • Step 1: Identify that the equation is 5x=0 5x = 0 .
  • Step 2: To solve for x x , divide both sides of the equation by 5.

Let's perform the calculation as outlined in Step 2:

5x=0 5x = 0

Divide both sides by 5 to isolate x x :

x=05 x = \frac{0}{5}

Simplifying, this gives:

x=0 x = 0

Therefore, the solution to the equation 5x=0 5x = 0 is x=0 x = 0 .

The correct answer is option 4: x=0 x = 0 .

Answer

x=0 x=0

Exercise #2

5x=1 5x=1

What is the value of x?

Video Solution

Step-by-Step Solution

To solve the equation 5x=1 5x = 1 , we need to isolate x x . Here are the steps:

  • Step 1: Start with the equation 5x=1 5x = 1 .
  • Step 2: Divide both sides of the equation by the coefficient of x x , which is 5, to isolate x x . This gives us:
  • 5x5=15\frac{5x}{5} = \frac{1}{5}
  • Step 3: Simplify the left side:
  • 5x5=x\frac{5x}{5} = x
  • Step 4: Write the simplified equation:
  • x=15x = \frac{1}{5}

    Therefore, the solution to the equation 5x=1 5x = 1 is x=15 x = \frac{1}{5} .

The correct answer choice is:

x=15 x = \frac{1}{5}

Answer

x=15 x=\frac{1}{5}

Exercise #3

Solve for X:

64x=18 6-4x=-18

Video Solution

Step-by-Step Solution

To solve the equation 64x=18 6 - 4x = -18 , we follow these steps:

  • Step 1: Subtract 6 from both sides of the equation to begin isolating the term with x x :

64x6=186 6 - 4x - 6 = -18 - 6

This simplifies to:

4x=24 -4x = -24

  • Step 2: Divide both sides by -4 to solve for x x :

4x4=244 \frac{-4x}{-4} = \frac{-24}{-4}

The equation simplifies to:

x=6 x = 6

Thus, the solution to the equation is x=6 x = 6 .

Answer

6

Exercise #4

Solve for X:

8x=5 -8-x=-5

Video Solution

Step-by-Step Solution

To solve the equation 8x=5 -8 - x = -5 , we'll isolate the variable x x by performing algebraic operations:

Step 1: Add 8 to both sides of the equation to eliminate the 8-8:

8x+8=5+8 -8 - x + 8 = -5 + 8

This simplifies to:

x=3 -x = 3

Step 2: To solve for x x , we need to change the sign of x x . Multiply both sides by 1-1:

x=3 x = -3

Therefore, the solution to the equation is 3\boxed{-3}.

Answer

3 -3