In an equation, letters stand for a missing number. To solve an equation, find the values of missing numbers. A typical exam question is:

Solve the equation **2a + 3 = 7**

This means we need to find the value of *a*. The answer is **a = 2**

Now you've got the hang of simple equations, let's look at some slightly trickier ones.

Sometimes an equation will have multiples of an unknown - eg 3x = 12, 5b = 20 or 16y = 4

To solve these, you need to get the unknown on its own. Do this by dividing both sides.

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