Video narration
Let’s solve a classic Algebra 1 equation: 3x minus 7 equals 11. Our goal is to get x by itself. First, undo the minus 7. Add 7 to both sides: 3x minus 7 plus 7 equals 11 plus 7, so that becomes 3x equals 18. Now undo the times 3. Divide both sides by 3: 3x over 3 equals 18 over 3, so x equals 6. Quick check: plug it back in. 3 times 6 is 18, and 18 minus 7 is 11, which matches the right side. So the solution is x equals 6.