Solving equations

Question 1

Solve: 24 − 7x = 17

x = 

Question 2

Solve: 5x − 11 = −36

x = 

Question 3

Ben solved 3x + 12 = 39 and got x = 17. Check by substituting, then give the correct solution.

x = 

Question 4

Solve: 7x = 140

x = 

Question 5

A rectangular dog run is 7 m wide. Its perimeter is 70 m. Use 2L + 14 = 70 to find its length L, in m.

Answer 

Question 6

Solve: x + 1/2 = 1. Give x as a fraction or mixed number in simplest form.

Answer (as a fraction)

Question 7

Ines has $201 saved and adds $21 each week. After how many weeks will Ines have $327?

Answer 

Question 8

Solve: x − 48 = −23

x = 

Question 9

Solve: x/2 + 4 = 10

x = 

Question 10

Solve: y + 8.2 = 21.5

y = 

Question 11

A phone plan costs $16 per month plus $2 per GB of data. One month's bill was $38. How many GB were used?

Answer 

Question 12

Solve: x ÷ 4 = 8

x = 

Question 13

Solve: (2/5)x = 16

x = 

Question 14

Solve: 8x − 6 = 50

x = 

Question 15

Solve: 3x + 4 = 31

x = 

Question 16

Solve: 1 − 4x = 13

x =