Write an equation, and solve it.
2007-03-11 13:41:37 · 9 answers · asked by Anonymous in Education & Reference ➔ Homework Help
the sum means addition
four times a number is 4x
so you add 4x to 16 and the sum of that is 100
4x + 16 = 100
cancel the 16:
4x + 16 - 16 = 100 - 16
4x = 84
divide 84 by 4:
x = 21
ta da!!!
lol
simple algebra
2007-03-11 13:46:13 · answer #1 · answered by Anonymous · 0⤊ 0⤋
4x + 16 = 100
4x + 16-16 = 100-16
4x = 84
4x/4 = 84/4
x = 21
2007-03-11 20:50:23 · answer #2 · answered by hanalulu2☺♥☻ 4 · 0⤊ 0⤋
Let N be that number
so 4N+16 = 100 is the equation the words ask for.
subtract 16 from both sides to get 4N=84
divide both sides by 4. You get n=21 which is the number
2007-03-11 20:45:32 · answer #3 · answered by Rich Z 7 · 0⤊ 0⤋
4x + 16 = 100
4x = 100 - 16
4x = 84
x = 84/4
x = 21
2007-03-11 20:46:06 · answer #4 · answered by Stephen Dedalus 2 · 0⤊ 0⤋
4x+16=100
-16 -16
4x=84
4x/4=84/4
x=21
2007-03-11 20:45:09 · answer #5 · answered by *Glitta n' Gloss* 2 · 2⤊ 0⤋
4x+16=100
4x+16-16=100-16
4x=84
x=21
(Been 20 years since I did this!)
2007-03-11 20:55:08 · answer #6 · answered by ? 6 · 0⤊ 0⤋
4x+16 = 100
4x=100-16
x=84/4
x=21
2007-03-11 20:46:28 · answer #7 · answered by CanadianBlondie 5 · 0⤊ 0⤋
4x+16=100
100-16=84
4x=84
84/4=21
2007-03-11 20:45:36 · answer #8 · answered by Skyhawk 5 · 0⤊ 0⤋
4n + 16=100
100-16=4n
84=4n
21=n
2007-03-11 20:45:57 · answer #9 · answered by Revelation S 4 · 0⤊ 0⤋