This week we are focusing on solving equations using variables (Outcome P5.2)
What is a variable? A variable in math is our unknown. We usually represent this unknown with a letter or a symbol. For example, in the following equation, the variable is the letter c.
c + 2 = 5
c - 2 = 5 - 2
c = 3
I can check my answer by substituting my answer for the variable.
3 + 2 = 5
If I get the right answer, then I know the value of the variable.
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