For a fraction, if the numerator adds 8 and the denominator subtracts 10, its simplified value is 34. If the numerator adds 18 and the denominator adds 32, its simplified value is 12. What is this fraction______ ．

For a fraction, if the numerator adds 8 and the denominator subtracts 10, its simplified value is 34. If the numerator adds 18 and the denominator adds 32, its simplified value is 12. What is this fraction______ ．

Let the numerator of the score be a and the denominator be B. according to the stem analysis, we can get: 3b − 4A = 62 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; ① B = 2A + 4 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp