Equations in one unknown
whether a number is a solution, solving linear equations, equations with brackets and fractions, rearranging formulas, word problems leading to equations
Exercises are drawn at random from a large bank - every click gives a different set.
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Solved: 0 of 10
Solve the equation
x(x + 2) − (x − 6)(x − 3) = 4
Write an equation and solve it
Mum is 3 times as old as Peter. Together they are 48 years old. How old is Peter?
Solve the equation
8x − 8 = 2x − 68
Write an equation and solve it
I thought of a number, multiplied it by 6 and added 22. The result was 52. What was the number?
Problem
A train travelled for 4.5 hours and covered 540 km. What was the average speed in km/h?
Solve the equation
−9x + 10 = 91
Solve the equation
−4 · (x − 10) = 56
Solve the equation
(3x − 12)/5 = (x − 11)/4
Write an equation and solve it
The sum of five consecutive whole numbers is 195. What is the smallest of these numbers?
Solve the equation
x/2 − (x + 4)/5 = 1
This address is one particular set - everyone who opens it gets exactly the same exercises. Copy the link from the address bar and send it to the class. You can generate a new set at the top of the page.
PhiBoard is a free online whiteboard for maths
These exercises are part of it. On the board itself you can plot a function, write a formula in LaTeX, or solve a problem together with a teacher or a friend - live, in the browser. Our app is completely free.