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

Answer Key - Grade 7 Math Worksheet

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

1. 1.

   Kira spots 4x + 2.5 = 8.5 on the decimal puzzle sheet. What is x?

   1.5
2. 2.

   Noah finds 2x − 1/3 = 3 in the math book's puzzle corner. What is x?

   5/3
3. 3.

   Pia meets a negative number in front of x: -2x + 6 = 14. What is x?

   -4
4. 4.

   Zee saves the hardest card, -2.5x + 5 = -10, for last. What is x?

   6
5. 5.

   Ari tests four guesses for 1.5x + 3 = 12. Which value of x makes it true?

   • 5
   • 6
   • 9
   • 10
6. 6.

   Jun's sunflower is 4.5 cm tall and grows 1.5 cm a day. After how many days is it 12 cm tall?

   5
7. 7.

   Luz's art club buys 4 cans of paint, uses a $3 coupon, and pays $17. How much does one can of paint cost?

   $5
8. 8.

   Milo walks 1/2 mile to the track, then runs 6 equal laps, for 2 miles in all. How long is one lap?

   1/4
9. 9.

   Noah solves 3x + 4 = 19 with algebra: subtract 4 from both sides, then divide both sides by 3. Which arithmetic does the same steps in the same order?

   • (19 + 4) ÷ 3
   • (19 − 4) ÷ 3
   • (19 − 4) × 3
   • 19 ÷ 3 − 4
10. 10.

    Ren solves 2x + 9 = -5 with algebra: subtract 9 from both sides, then divide both sides by 2. Which arithmetic does the same steps in the same order?

    • -5 ÷ 2 − 9
    • (-5 − 9) × 2
    • (-5 − 9) ÷ 2
    • (-5 + 9) ÷ 2