How do you solve this problem
18+(16-9)•4=?

Use PEMDAS

Parenthasis
Exponents
Multiplication/Division (whichever comes first)
Addition/subtraction(whichever comes first)

First do whats in Perenthasis

16-9 is 7

now we have

18 + (7) ·4

Multiplication comes next in PEMDAS

do 7 x 4. Youll get 28

Now we have 18 + 28

Add them to get 46

The final answer is 46 :)

-xCalypso, 8th, Algebra 1 Honors 

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Skew lines(segments) are lines(segments) in 3 dimensions that do not intersect the given segment and are not parallel to it.  ae, bf, eg, and fh are your skew segments.  i hope that : )