2007-04-26 11:51:42 · 6 answers · asked by janegrangerhermione 1 in Science & Mathematics ➔ Mathematics
First, replace x with four. so you get 21- (4 times 4)
Then, following PEMDAS (order of operations,)
you multiply 4 by 4 (because its inside the parenthesis)
then you get 21-16
subtract for the answer
2007-04-26 11:55:40 · answer #1 · answered by woahxgirl 2 · 1⤊ 0⤋
21 - (4 multiplied by x)=
21 - 4(4) =
21 - 16 = 5
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2007-04-26 18:56:57 · answer #2 · answered by aeiou 7 · 1⤊ 0⤋
21 - 4(4) = 21 - 16 = 5
2007-04-26 18:53:57 · answer #3 · answered by richardwptljc 6 · 1⤊ 0⤋
x=4
21-(4*4)
21-16=5
2007-04-26 19:23:18 · answer #4 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
x=4
21-(4*x)
21-(4*4)
21-16=5
2007-04-26 19:03:30 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Substitute since you know x = 4.
21- (4 * 4)
21 - 16
5
2007-04-26 18:56:47 · answer #6 · answered by coconutty beanz xD 4 · 1⤊ 0⤋