Czy potrafi ktos rozwiazac te 2 przyklady: 7k+21/14 - 3k-9/6 4*3p+6 /12 + 10-5p/15*9

1) [latex] frac{7k +21}{14} - frac{3k-9}{6} = frac{7(k+3)}{14} - frac{3(k-3)}{6} = frac{k+3}{2} - frac{k-3}{2} = frac{k+3-k+3}{2} = frac{6}{2} = 3[/latex] 2)[latex] frac{12p+6}{12} + frac{10-5p}{135} = frac{6(6p+1)}{12} + frac{5(2-p)}{135} = frac{6p+1}{2} + frac{2-p}{27} = frac{162p+27+4-2p}{54} = frac{160p+31}{54} =[/latex]