Question 58834
{{{1.13*10^1 + 9.1*10^-1}}}
is the same as
11.3+0.91=12.21
or {{{1.22*10^1}}}

{{{3/4 - 2/9}}}
fisrt convert the equation to fractions with a common base. That base is 36.

{{{3/4}}} is equivilant to {{{27/36}}} and {{{2/9}}} is equivilant to {{{8/36}}}

so
{{{(27/36)-(8/36)=(19/36)}}}