3 4\13×15 3\41-3 4\13×2 3\41 помогите решить

<em><span>3</span><span> 4</span><span>\13</span><span>×15</span><span> 3</span><span>\41</span><span>-3</span><span> 4</span><span>\13</span></em><em><span><em>×</em>2</span></em><em><span> 3</span></em><em><span>\41</span></em>=43/13*618/41-43/13*85/41=43/13(618/41-85/41)=43/13*533/41=43*41/41=43