Solve equations with a bracket like 3(x + 4) = 21

Answer Key - Grade 7 Math Worksheet - Building Confidence

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

1. 1.

   Ari draws two bars for 2(x + 4) = 14, with a ruler and a very serious face. What is x?

   3
2. 2.

   Bo colors the bars for 3(x + 3) = 24, one crayon color for each piece. What is x?

   5
3. 3.

   Esme sketches the bars for 4(x − 4) = 8 on lined paper. What is x?

   6
4. 4.

   Jun draws the bars for 4(x − 2) = 12 in pen, very boldly. What is x?

   5
5. 5.

   Kira finds this on a puzzle card: 4(x + 2) = 20. What is x?

   3
6. 6.

   The math club warm-up is 2(x + 5) = -4, and Luz wants to finish first. What is x?

   -7
7. 7.

   Zee has four possible answers for 3(x − 3) = 12, and only one works. Which value of x makes it true?

   • 7
   • 5
   • 1
   • 4
8. 8.

   Ari checks a friend's answers to 2(x + 3) = -8 before class. Which value of x makes it true?

   • -14
   • -7
   • -4
   • -1
9. 9.

   Esme and 2 friends each buy a sandwich and a $1 juice. They spend $12 in all. How many dollars does one sandwich cost?

   3
10. 10.

    Jun has 3 boxes of crayons. After taking 2 crayons out of each box, 18 crayons are left in all. How many crayons were in each box at first?

    8