11. According to B.E.D.M.A.S. (brackets, exponents, division, multiplication, addition, subtraction), work on the exponents first, since the given problem does not contain any brackets. Recall that any number to the power of 00 is always 11.
6.73-2*color(teal)(5^0)-:26.73−2⋅50÷2
=6.73-2*color(teal)1-:2=6.73−2⋅1÷2
22. Work on multiplication next since multiplication and division are ranked equally. Solve color(darkorange)(2*1)2⋅1 since multiplication appears first.
=6.73-color(darkorange)(2*1)-:2=6.73−2⋅1÷2
=6.73-color(darkorange)2-:2=6.73−2÷2
33. Work on division next. Solve color(violet)(2-:2)2÷2.
=6.73-color(violet)(2-:2)=6.73−2÷2
=6.73-color(violet)1=6.73−1
44. Solve.
=color(green)(|bar(ul(color(white)(a/a)color(black)(5.73)color(white)(a/a)|)))