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Question

Write the statement as an equation : 7 substracted from thrice a number is 18.


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Solution

Writing the equation

A statement of equality which involves one or more variables is called an equation.

Let the number be x

Thrice the number 3x

7 substracted from thrice the number 3x-7

7substracted from thrice the number is 183x-7=18

The LHS of the equation is 3x-7 and RHS of the equation is 18

Hence the required equation is 3x-7=18


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