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What is asked in the problem?
What are the two numbers?
Given:
the sum of two numbers is 134.
The larger number is 10 less than triple of the smaller number.
Representation:
Let      x = smaller number
   3x - 10 = the larger number 
Write an Equation:
The sum of two numbers is 134.
 x + 3x - 10 = 134
     4x - 10 = 134
4x - 10 + 10 = 134 + 10
          4x = 144
           x = 36  ------->> smaller number
3x - 10 = Larger number , x = 36
        = 3(36) - 10
        = 108 - 10
        = 98 ----------->> Larger number