Question

Evaluate the following expression. 1/2+2/3+3/4 b. 2/3×42/5×10/7

Answer 1

Answer:
`\begin{gathered} A)\text{ 1}(11)/(12) \\ B)\text{ 8} \end{gathered}`Explanations:

A)

`(1)/(2)+(2)/(3)+(3)/(4)`

Find the LCM of 2, 3, 4

LCM = 12

The expression becomes:

`\begin{gathered} (6+8+9)/(12) \\ =\text{ }(23)/(12) \\ =\text{ 1}(11)/(12) \end{gathered}`

B)

`\begin{gathered} (2)/(3)*(42)/(5)*(10)/(7) \\ =\text{ }(2*6*2)/(3) \\ =2*2*2 \\ =\text{ 8} \end{gathered}`