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

Answer 1

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

When performing a calculation that involves multiple operations, start by counting the TERMS.

The final step adds or subtracts the single values that result from the simplification of each term.

For every term, the sequence is

#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#

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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