10 added to 4 times a number is equal to 5 subtract to 5 time the number.what is the number?
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Let the number =x
After adding 10 to 4 times of x = 4x + 10
After subtracting 5 from 5 times of x = 5x - 5
A. T. C.
4x + 10 = 5x - 5
4x = 5x - 5 - 10
4x = 5x -15
4x - 5x = -15
-x = -15
+x = +15
.i.e. the required number is +15
I think this is better to understand
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