Answer :

The appropriate equation will be 2x + 3x + 4x + 5x = 705

How to calculate the value?

The equation that equals 47 by only using the digits 2,3,4,5 once will be illustrated below:

2x + 3x + 4x + 5x = 705

Finding the value of x will be

15x = 705

Divide

x = 705 / 15

x = 47

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