Potrzebuje na jutro tylko przyklad c) pomocy nie umiem

(1,5x^2y-3/4x^2-15)-(2/5x^2y-2 2/3-1/8x^2)=15/10x^2y-3/4x^2-15-2/5x^2y+2 2/3+1/8x^2= =15/10x^2y-4/10x^2y-6/8x^2+1/8x^2-15+2 2/3=11/10x^2y-5/8x^2-12 1/3

[latex](1,5 x^{2} y- frac{3}{4} x^{2} -15)-( frac{2}{5} x^{2} y-2 frac{2}{3} - frac{1}{8} x^{2} )=1,5 x^{2} y- frac{3}{4} x^{2} -15 \ -frac{2}{5} x^{2} y+2 frac{2}{3} +frac{1}{8} x^{2}=(1,5 x^{2} y -frac{2}{5} x^{2} y)+(- frac{3}{4} x^{2}+frac{1}{8} x^{2})+(-15+2 frac{2}{3})= \ ( frac{15}{10} x^{2} y- frac{4}{10} x^{2} y)+(- frac{6}{8} x^{2} +frac{1}{8} x^{2} ) - 12 frac{1}{3} = frac{11}{10} x^{2} y - frac{5}{8} x^{2} - 12 frac{1}{3}[/latex]