52/45-(3 3/5 - 1 7/9) х (1/2 - 1/3) решите по действиям !

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1) 3 3/5 - 1 7/9 = 2 27-35/45= 1 72-35/45= 1 37/45
2) 1/2 - 1/3 = 3-2/6=1/6
3) 1 37/45 • 1/6 = 82•1/45•6=41/135
4) 52/45-41/135= 156-41/135=115/135=23/27