Solve for x: 3x + 7 = 22

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Prepare for the 8th Grade FAST Mathematics Test with our Pre-Algebra quiz. Study with multiple choice questions, each with hints and explanations. Build your confidence and ensure you're ready to excel!

Multiple Choice

Solve for x: 3x + 7 = 22

Explanation:
To solve for x, undo what’s been done to x. In 3x + 7 = 22, x is multiplied by 3 and then 7 is added. Subtract 7 from both sides to isolate the term with x: 3x = 15. Then divide both sides by 3 to undo the multiplication: x = 5. Check: substitute back, 3(5) + 7 = 15 + 7 = 22, which matches the right side. So x = 5.

To solve for x, undo what’s been done to x. In 3x + 7 = 22, x is multiplied by 3 and then 7 is added. Subtract 7 from both sides to isolate the term with x: 3x = 15. Then divide both sides by 3 to undo the multiplication: x = 5.

Check: substitute back, 3(5) + 7 = 15 + 7 = 22, which matches the right side. So x = 5.

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