Answer:
4
Explanation:
here's your solution
=> we need to find out X
=> given expression is 13 - 4x = 1 - x
=> 13 - 4x = 1 - x
=> 13 - 1 = -x + 4x
=> 12 = + 3x
=> x = 12/3
=> x = 4
hope it helps
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