Make six expressions with the numbers 4, 7 and 9 using the operations-addition, subtraction and
multiplication. A number cannot be used more than once. Step By Step Explanation
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Step-by-step explanation:
An interesting topic- Matchsticks Pattern is explained in the beginning which helps in explaining the concept of algebra. Various patterns are formed using matchsticks through which the students understand the concept of variables.
1) A variable takes on different values, its value is not fixed.
2)A variable allows us to express relations in any practical situation. It also allow us to express many common rules in both geometry and arithmetic in a general way.
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