4(2x+1)=27+3(2x-5)
2007-10-05 13:27:24 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
8x + 4 = 27 + 6x - 15
2x = 8
x = 4
2007-10-05 13:31:08 · answer #1 · answered by Steve B 6 · 0⤊ 0⤋
This is the classic "break it all down, combine, isolate x" kind of equation.
First, break it down by multiplying all the terms on both sides.
4(2x+1) = 8x+4
3(2x-5) = 6x-15
So now you have
8x+4=27+6x-15
Second, isolate x. Add -6x to both sides
8x-6x+4=27-15, or 2x+4=12.
Add -4 to both sides
2x=12-4, 2x=8
Solve for x by dividing both sides by 2
x=4
Check in the original equation to make sure it is correct.
Both sides of the equation =36, so it works.
2007-10-05 13:36:57 · answer #2 · answered by GoDogGo 4 · 0⤊ 0⤋
8x + 4 = 27+ 6x -15
8x + 4 = 12 + 6x
8x = 8 + 6x
2x = 8
x = 4
2007-10-05 13:32:18 · answer #3 · answered by Anonymous · 0⤊ 0⤋
HEy, we all need help in math!
Well we can always simplify.
First we can distribute:
8x + 4= 6x - 15
See, I distrubuted the four to the nubers in the parenthesis and the three to the parenthesis by multiplying
Now we need to get x alone so we can subtract 6x on both sides to get x alone. Our answer would then be 2x + 4 = -15
Now subtract 4 on both sides to get 2x alone. Rember whatever we do to one side we do to the other. So now our equation looks like 2x= -19. Now we divide on both sides to get a grand answer of x=9.5
Easy enough for you?
2007-10-05 13:34:57 · answer #4 · answered by MelMel 2 · 0⤊ 0⤋
8x+4=27+6x-15
8x+4=12+6x
2x=8
x=4
=D
2007-10-05 13:31:10 · answer #5 · answered by retardedfroggy 1 · 0⤊ 0⤋
4(2x+1)=27+3(2X-5)
8x+4=27+6x-15
2x=8
x=4
yup i think 4 ....
2007-10-05 13:33:03 · answer #6 · answered by sa053191 1 · 0⤊ 0⤋