Math 8 Equations Review

Solve for x

100

Solve for x:

3x - 100 = 500

x = 200

200

Solve for x:

x / 4 - 10 = 5

x = 60

300

Solve for x:

4x + 10 = 2x

x = -5

400

Solve for x:

5x + 3 = 4x + 90

x = 87

500

Solve for x:

-2x + 10 - x = 4x - 67

x = 11

Equations with brackets

100

Solve for a:

2(a + 6) = 20

a = 4

200

Solve for b:

-2(b - 5) = 16

b = -3

300

Solve for c:

4(c + 2) = 2c + 12

c = 2

400

Solve for d:

3(2d - 1) + 4 = 2d

d = -1/4 or -0.25

500

Solve for e:

5(e - 2) - 3(2e + 4) = 4

e = -26

Solve for x and y

100

Solve for x and y:

x = 2y

x + y = 240

x = 160

y = 80

200

Solve for x and y:

x = y - 10

x - 3y = 40

x = -35

y = -25

300

Solve for x and y:

3x + y = 10

x + y = 20

x = -5

y = 25

400

Solve for x and y:

5x + 2y = 19

3x - 2y = 29

x = 6

y = -11/2 or -5.5

500

Solve for x and y:

-2x + 4y = 20

-4x - 2y = 10

x = -4

y = 3