[tex]a-b=22,3 \to \boxed{a=22,3+b} \\a+b=28,56 \\ *********\\ \text{L-am scos pe a din relatia 1 si il bag in relatia 2 } \\ \\ 22,3+b+b=28,56\\22,3+2b=28,56\\2b=28,56-22,3\\2b=6,26\\\bold{b=3.13} \\ \\ a+3.13=28,56\\a=28,56-3.13\\\bold{a=25.45}[/tex]
