Answer :

Answer:

The first step is to isolate the variable, which in this situation is x. We can do this by subtracting 3 from both sides of the equation, so that the equation would become 5x=15.

Step-by-step explanation:

Heather

Answer: x = 3

Step-by-step explanation:

      I am not sure what wording you need for your justifications, so I have solved the problem for x with explanations and you can reword it as needed.

Given equation:

   5x + 3 = 18

(Step 1) Subtract 3 from both sides of the equation to isolate the variable with inverse operations:

   5x + 3 - 3 = 18 - 3

   5x = 15

(Step 2) Divide 5 from both sides of the equation to isolate the variable with inverse operations:

   (5/5)(x) = (15)/5

   x = 3

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