Answer:
53 = 53
Explanation:
13x+1=11x+9 13(4)+1=11(4)+9
13x=11x+8 52+1=44+9
2x=8 53=53
x=4
13x+1 = 11x+9
13x-11x = 9-1
2x = 8
x = 4
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