Simple Algebra **Practice Questions**

Simple Algebra

Basic Algebra is a common subject for the following exams:

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Virtual Math Lab – Beginning Algebra

## Algebra Practice Questions

**1. 5x + 3 = 7x -1. Find x**

a) 1/3

b) ½

c) 1

d) 2

**2. 5x+2(x+7) = 14x – 7. Find x**

a. 1

b. 2

c. 3

d. 4

**3. 12t -10 = 14t +2. Find t**

a. -6

b. -4

c. 4

d. 6

**4. 5(z+1) = 3(z+2) + 11 Solve for Z**

a. 2

b. 4

c. 6

d. 12

**5. The price of a book went up from $20 to $25. By how many percent did the price increase?**

a. 5

b. 10

c. 20

d. 25

**6. The price of a book decreased from $25 to $20. By how many percent did the price decrease?**

a. 5

b. 10

c. 20

d. 25

**7. After taking several practice tests, Brian improved the results of his GRE test by 30%. Given that the first time he took the test Brian had answered 150 questions correctly, how many correct answers did he answer in the second test?**

a. 105

b. 120

c. 180

d. 195

**Answers **

**1. D**5x+ 3 = 7x-1

now collect like terms

3+1 = 7x-5x

every time you move something it changes signs

4= 2x anything multiplied is divided on the other side and vice versa

4/2 =x

2 = x

**2. C**

5x + 2(x + 7) = 14x – 7

5x + 2x + 14 = 14x – 7

7x + 14 = 14x – 7

7x – 14x = -14 – 7

-7x = -21

x = 3

**3. A**

**4. C5(z+1) = 3(z+2) + 11. Z=?**5z + 5 = 3z + 6 + 11

5z + 5 = 3z + 17

5z = 3Z + 17 – 5

5z – 3z = 12

2z = 12

z = 6

**5. D**The price increased from $20 to $25 ($5) so the question is 5 is what percent of 20. Or, 5/20 = x/100 ; 500/20 = 25%

**6. C**

**7. D**The first time, Brian answered 150 questions correctly and the second time he answered 30% more correctly, so,

150 + (30/100 * 150) ; 30% of 150 = 45, or (30 * 150)/100

so 150 + 45 = 195

Written by: **Modified: ** March 21st, 2018**Published: ** October 11th, 2012

I need to know how to do the formula in order to pass algebra to get accepted into a practical nursing program. Also, I need to learn basic mathematics.

you can search the formulas for basic allgebra online

In order to solve it you have to look at the two sides separated by the equal sign then combine like terms after you add or subtract from both sides so a variable(s) is on one side and the numbers are on one side then if they have a common factor divide them by the smallest of the two then you will get your answer.

Could you explain 4 like you did 1?

OK updated solution for #4 – will get to the others soon!

in question 4 .how 11.z changes in 11 .i think it should be 11z because in alzebra point indicates multiply

Corrected – thank you!

for question 2. I keep getting 2 for an answer. Can you please show the breakdown on the solution.

ok!

Please no I need explanation for no 7

Answer for question 5 should be c. 20%

The price increased from $20 to $25 ($5) so the question is 5 is what percent of 20. Or, 5/20 = x/100 ; 500/20 = 25%

Shouldn’t the equation for #2 be;7x+ -14x = -21 and not 7x + 14x = -21?

Thank you – typo corrected!