2006-11-21 10:54:55 · 5 answers · asked by valeria m 1 in Science & Mathematics ➔ Mathematics
4 [ r + 4 ] = 12
r + 4 = 3 --- divide both sides by 4
r = -1 --- subtract 4 from both sides
So the answer is r = -1
2006-11-21 11:01:36 · answer #1 · answered by NvadrApple ♫ 2 · 1⤊ 0⤋
The distributive rule applies.
4 times the quantity r + 4 = 4r + 16
4r+ 16 = 12
4r= 12 - 16 = -4
r= negative 1 (for some reason, the - sign didn't want to print)
2006-11-21 19:12:55 · answer #2 · answered by JIMBO 4 · 1⤊ 0⤋
open the bracket
4r + 16 = 12
move 16 to the other side
4r = 12 - 16
4r = -4
r = -1
2006-11-21 19:02:03 · answer #3 · answered by Anonymous · 1⤊ 0⤋
4r+16=12
4r=12-16
4r=-4
r=-4/4
r=-1
2006-11-22 06:32:57 · answer #4 · answered by sam 3 · 0⤊ 0⤋
-1 i have already showed my work in your other question.
2006-11-21 19:16:08 · answer #5 · answered by poker5495 4 · 0⤊ 0⤋