Question

Simplify of 640÷80×4-4 of20+639-72÷9

Answer 1

a/q to bodmas rule 
640/80x4-4of20+639-72/9
640/80x4-80+639-72/9
8x4-80+639-8
32-80+639-8
48+639-8
687-8
679

Answer 2

The value of $\frac{640}{80} \times 4-4 \times 20+639-\frac{72}{9}$ is 583.

By using VBODMAS rule,

For simplifying the given equation easier, by the arrangement of the given expression in a proper sequence by the VBODMAS rule.

The given question is simplified by the above VBODMAS rule,

$=\frac{640}{80} \times 4-4 \times 20+639-\frac{72}{9}$

First we can multiply and divide as per the given question.

$=\frac{640}{80} \times 4-80+639-8$

After the multiplication and division only we can subtract and add,

$\begin{array}{c}{=32-80+639-8} \\ {=671-88} \\ \bold{=583}\end{array}$