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Simplifying Expressions

Math 0097  Simplifying Expressions


 

Simplify each of the following:

1. 7d – 3d + d

 

2. 5A – 8 – A + 9

 

3. Simplify 2A – 5 – (3A + 10)

 

4. 2(B + 4) – 4(3B – 5)

 

5. Evaluate the expression 3(A – 4B) for A = -3, B = -2.

 

6. Evaluate the expression 3A2 – 3AB + 5B2 for A = -4, B = -2.

 

7. Solve for A: A – 5 = -7

 

8. Solve for A:  -7A = -42

 

9. Solve for A:  8A + 12 = 4A – 16

 

10. Solve: 5A + 3(2 – 2A) = 8 + A

 

11. 15% of what number is 21?

 

12. What percent of 80 is 24?

 

13. What percent of 24 is 6?

 

 

 

Answers

  1. 5d
  2. 4A+1
  3. –A-15
  4. 28-10B
  5. 15
  6. 44
  7. A=-2
  8. A=6
  9. -7
  10. -2A-2
  11. 140
  12. 30%
  13. 25%