:D
2006-10-30 11:29:51 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Distribute the 2 on the left side and the 4 on the right side
2x + 4 = 4x - 4 + 4
Combine like terms
2x + 4 = 4x
Subtract 2x from each side
4 = 2x
Divide both sides by 2
2 = x
Answer: x = 2
Don't forget that you can easily check your answer by replacing x with 2 and see if the equation is true.
2006-10-30 11:31:44 · answer #1 · answered by MsMath 7 · 0⤊ 0⤋
x = 2
2006-10-30 19:32:43 · answer #2 · answered by Cheston R 1 · 0⤊ 0⤋
If you are short on time, then do what I used to do in school. X is usually a 1, 2 or 3 but mostly 1, then sometimes 2 and rarely 3. So I plugged a 1 into the x in the problem and see if it worked. If it doesn't I try #2. (this time it worked). Not really the right way to go about it, but when push comes to shove, it generally works.
2006-10-30 19:39:11 · answer #3 · answered by dt_05851 3 · 0⤊ 0⤋
2(x+2) = 4(x-1) + 4
2x +4 = 4x -4 + 4
2x -4x = -4 +4 - 4
-2x = -4
x = -4/-2
x = 2
2006-10-30 19:39:43 · answer #4 · answered by Cubitpipi a fan of Amazins 4 · 0⤊ 0⤋
Multiply through the parentheses:
2x + 4 = 4x - 4 + 4
Combine like terms:
4x - 2x = 4
2x = 4
x = 2
2006-10-30 19:32:29 · answer #5 · answered by Dave 6 · 0⤊ 0⤋
Are we doing your homework for you? This is easy stuff for an amatuer! LOL
2x+4=4x-4+4
2x+4=4x-0
4=2x
4/2x
2 =x
2006-10-30 19:36:24 · answer #6 · answered by Anonymous · 0⤊ 0⤋
2x+4=4x-4+4
2x-4x=-4
2x=4
x=2
2006-10-30 19:42:23 · answer #7 · answered by alandicho 5 · 0⤊ 0⤋