Basic Algebra

Solve Equations

100

x-5=10

x=15

200

x+7=14

x=7

300

9+x=12

x=3

400

6x = 48

x=8

500

t/13 = 26

t=2

Evaluate the Expression

100

6+ (2²-1)

9

200

3³-5+4

8

300

3(9/3)²

Note: 9/3 means 9 divided by 3

27

400

3³ - 64/8

^{Note: 64/8 means 64 divided by 8}

19

500

3³ - 8 + (4 x 2) + 12/6

11

Simplify

100

3x + 2x

5x

200

4y + 7 + 2y

6y + 7

300

5a - 2 + 3a + 6

8a + 4

400

2(3x + 4) - 5x

x + 8

500

4(2m + 3) + 5m - 6

13m + 6

Writing Expressions

100

"The sum of a number x and 7"

x + 7

200

"Twice a number y decreased by 5"

2y - 5

300

"Three times a number n, plus the square of the number"

3n + n²

400

"The product of 4 and a number m, divided by 2"

4m/2 or 2m

500

"Half of a number p, added to three times the difference of p and 7"

p/2 + 3(p - 7)

Substitution

100

If x = 3, what is the value of 2x + 4?

10

200

If y = 5, what is the value of 3y - 7?

8

300

If a = 4 and b = 6, what is the value of 2a + 3b?

26

400

If m = 2 and n = 7, what is the value of 4m² + 2n?

24

500

If p = 3, q = 4, and r = 5, what is the value of 

p² + q³ - r²?

48