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.

   Kira finds this on a puzzle card: 2x + 10 = 4. What is x?

   -3
4. 4.

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

   -5
5. 5.

   Milo copies 5x − 15 = -30 from the board and draws the bars. What is x?

   -3
6. 6.

   Noah's quiz starts with 2x − 8 = -2. What is x?

   3
7. 7.

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

   -5
8. 8.

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

   -4
9. 9.

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

   • 35
   • 15
   • 7
   • 3
10. 10.

    Bo's bean sprout is 9 cm tall and grows 3 cm each week. After how many weeks is it 30 cm tall?

    7