How do you simplify $17– 6 xx 10 ÷ 2 + 12$ ?

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Answer 1 · 2018-05-17T06:05:07

$color(purple)(=> -1)$

$17 - 6 xx 10 / 2 + 12$

Using PEMDAS rule,

$=> 17 - 60 / 2 + 12$ , multiplying

$=> 17 - 30 + 12$ , dividing

$=> 17 + 12 - 30$ , rearranging terms

$=> 29 - 30$ , adding

$color(purple)(=> -1$ , subtracting

Answer 2 · 2018-05-17T06:50:35

$-1$

Identify the number of terms first. Each term will simplify to a single answer which can be added or subtracted in the last step.

$color(blue)(17)" " color(red)(- 6xx10div2) color(green)(" " +12)" "larr$ there are 3 terms

Within each term the order of operations is:

$=color(blue)(17)" " color(red)(- (cancel6^3xx10)/cancel2) color(green)(" " +12)$

$=color(blue)(17)" " color(red)(-30) color(green)(" " +12)$

You will make fewer mistakes if you write the additions at the beginning and subtractions at the end.

$=color(blue)(17)" " color(green)( +12)" "color(red)(- 30)$

$=29" "color(red)(- 30)$

$=-1$

How do you simplify 17– 6 xx 10 ÷ 2 + 1217– 6 xx 10 ÷ 2 + 12?