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Example1

Title: Solve an Equation with Addition and Subtraction

Grade 6+ Lesson s3-l5

Explanation: The best way to understand algebra is by looking at some examples. Take turns and read each example for easy understanding.

Examples

Topics → Definition Example1 Example2

Solve for s: 12 + s = 20

Step 1

Given equation: 12 + s = 20

Subtract 12 from both sides and simplify:

⇒ 12 + s −12 = 20 − 12

⇒ s = 8

The solution to the equation 12 + s = 20 is s = 8.

Explanation:

Here, we subtract 12 from both sides of the equation to keep it balanced and simplified. Therefore, this means that when s is 8, the equation is true.