Solve two-step equations like 3x + 4 = 19

Answer Key - Grade 7 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.

1. 1.

   Ari draws a bar model for 3x + 6 = 21, sharpening the pencil twice to get the lines neat. What is x?

   5
2. 2.

   Bo colors a bar model for 4x + 8 = 44, using a new crayon for every piece. What is x?

   9
3. 3.

   Esme sketches 3x − 3 = 18 as bars on lined paper. What is x?

   7
4. 4.

   Jun draws the bars for 4x − 8 = 20 in pen, very boldly. What is x?

   7
5. 5.

   The math club warm-up is 4x + 12 = -8, and Luz wants to finish first. What is x?

   -5
6. 6.

   Pia doodles a tiny star next to 6x + 18 = -12 for luck. What is x?

   -5
7. 7.

   Ren gets 3x − 9 = -21 as the bonus question. What is x?

   -4
8. 8.

   Tala tests four guesses for 2x + 6 = 20. Which value of x makes it true?

   • 4
   • 13
   • 14
   • 7
9. 9.

   Zee has four possible answers for 5x − 10 = 25, and only one works. Which value of x makes it true?

   • 3
   • 7
   • 35
   • 15
10. 10.

    Jun has 8 shells and finds 4 more each day at the beach. After how many days does Jun have 36 shells?

    7