algebra · worked example

Solve 7x = 21

Method: linear isolation. Verified step-by-step solution with our free AI math solver.
Problem

7x=217x = 21

Step-by-step solution

  1. Divide both sides by 77: x=217x = \frac{21}{7}.

  2. Simplify: x=3x = 3.

Answer

x=3x = 3

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