MencRi pecahan 12/18+5/20= 9/21+7/14= dan mencari kpk dan fpb

[tex] \frac{12}{18} = \frac{2}{3} + \frac{5}{20} = \frac{1}{4} , \frac{2}{3} + \frac{1}{4} = \frac{(2x4)+(3x1)}{(3x4)} = \frac{11}{12} , Jadi awabnya \frac{11}{12} [/tex]