Question

What is 2 9/10 - 1 7/18=

Answer 1

`1(23)/(45)`

Step-by-step explanation:

`2(9)/(10)\text{ - 1}(7)/(18)`

Convert to improper fraction:

`\begin{gathered} (29)/(10)\text{ - }(25)/(18) \\ \text{LCM = 10(18) = 180} \\ \frac{29(18)\text{ - }25(10)}{180}\text{ } \\ =\text{ }\frac{522\text{ }-\text{ 250}}{180} \end{gathered}`
`\begin{gathered} =(272)/(180) \\ 4\text{ is common to both} \\ =\text{ }(4(68))/(4(45))=(68)/(45) \\ =\text{ 1}(23)/(45) \end{gathered}`