2007-04-09 14:30:32 · 8 answers · asked by blondiee107 1 in Science & Mathematics ➔ Mathematics
3x-15x+35=2x+18+45
-12x+35=2x+63
transposition
35-63=2x+12x
-28=14x
x=-2
2007-04-09 14:35:19 · answer #1 · answered by Chanale 2 · 0⤊ 0⤋
3x-5(3x-7)=2(x+9)+45
3x -15x + 35 = 2x + 18 + 45
-12x - 2x = 63 - 35
-14x = 28
x = 28/-14
x = -2
Solution: {x belongs to R| x = -2}
><><
2007-04-09 14:37:27 · answer #2 · answered by aeiou 7 · 0⤊ 0⤋
3x - 15x + 35 = 2x + 18 + 45
-12x + 35 = 2x + 63
-14x = 28
x = -2
2007-04-09 14:35:01 · answer #3 · answered by richardwptljc 6 · 0⤊ 0⤋
3x-5(3x-7)=2(x+9)+45
3x-15x+35=2x+18+45 factor out
-35 -35
3x-15x=2x+18+10 subtract
-12x=2x+28 simplify
-14x=28 divide (-14) on each side
x= -2 answer...don forget the negative!
2007-04-09 14:57:09 · answer #4 · answered by .:KUDDLEZ:. ONE& ONLY 3 · 0⤊ 0⤋
x = -2
2007-04-09 14:34:40 · answer #5 · answered by KT Sue 1 · 0⤊ 0⤋
35
2007-04-09 14:38:16 · answer #6 · answered by alex f 1 · 0⤊ 1⤋
u would get 3x-15x+35=2x+18+45
then -12x+35=2x+63
then-14x=28
x= negative 2
2007-04-09 14:34:16 · answer #7 · answered by canesman05 2 · 0⤊ 0⤋
3x-15x+35=2x+18+45
-12x+35=2x+63
-12x-2x+35=2x-2x+63
-14x+35=63
-14x+35-35=63-35
-14x=28
-14x/-14=28/-14
x=-2
2007-04-09 14:38:39 · answer #8 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋