w pierwszym bedzie 10,8 w drugim 11.9 w trzecim 7.2
1) [latex]2 frac{1}{10}+ frac{2}{3}- 1 frac{4}{10}+7=100 [/latex] [latex] frac{7}{10} + frac{2}{3}+7=100 [/latex] [latex] frac{21}{30}+ frac{20}{30} +7=100[/latex] [latex]8 frac{11}{30} eq 100[/latex] 2) [latex]0,15-2,5+0,8 + 10 frac{2}{3} =100[/latex] [latex]-1,55 + 10frac{2}{3}=100 [/latex] [latex]-1 frac{11}{20}+10 frac{40}{60} =100[/latex] [latex] -1frac{33}{60}+ 10 frac{40}{60} =100[/latex] [latex]9 frac{7}{60} eq 100[/latex] 3) [latex]2x + frac{3}{20}+ 6 frac{1}{3}=100 [/latex] [latex]2x + frac{9}{60}+6 frac{20}{60}=100 [/latex] [latex]2x + 6 frac{29}{60} =100[/latex] [latex]2x=100- 6frac{29}{60} [/latex] [latex]2x=93 frac{31}{60} [/latex] [latex]x=45 frac{31}{60} [/latex]