Question

How do you evaluate `30\div ( - 6) + ( - 28) \div 7`?

Answer 1

`30 div (-6)+(-28)div7`
`=-9`

Explanation:

In a calculation involving different operations, count the number of TERMS first.

Each term will simplify to a single value and these are added or subtracted in the last step.

Within each term, the order is

• brackets
• powers and roots
• multiply and divide

`color(blue)(30 div (-6))color(magenta)(+(-28)div7)" "larr` there are 2 terms
`color(white)(xxx)darrcolor(white)(xxxxxxxx)darr`
`=color(blue)(-5)color(white)(xxxx)color(magenta)(+" "(-4)`

`= -5-4`

`=-9`