Simultaneous equations

What you'll learn

1. 1

   Imagine you have two scales that must balance at the same time. That's what simultaneous equations are — two puzzles that share the same numbers! 🎭

2. 2

   If one equation says x + y = 5 and another says x - y = 1, how many unknowns are there?

3. 3

   Let's balance the scales! Drag the numbers to make both equations true for the same x and y.

4. 4

   Solve: 2x + y = 10 and x - y = 2. Let's do it together!

5. 5

   From the worked example, what is y when x = 4?

6. 6

   Now try this pair: x + y = 7 and x - y = 3. Find x and y using the number line!

7. 7

   If x + y = 7 and x - y = 3, what is x?