Help?
2007-04-19 22:25:04 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
-4 + 2(2x + 3) = 8
-4 + 4x + 6 = 8
-4 + 4x =2
4x =6
x =6/4
x = 1.5
therefore x = 1.5
2007-04-19 22:53:59 · answer #1 · answered by ramsundar 5 · 3⤊ 0⤋
So I take it your question is, "How do I solve this for x?"?
First distribute the 2:
-4 + 2(2x + 3) = 8
-4 + 4x + 6 = 8
Simplify the left by adding the -4 and the 6:
4x + 2 = 8
Now get the x term by itself by subtracting 2 from both sides
4x = 6
Finally, you just have to get rid of that 4. Divide both sides by 4:
x = 6/4
This simplifies to x = 3/2.
2007-04-19 22:30:52 · answer #2 · answered by Anonymous · 1⤊ 0⤋
-4 + 2(2x + 3) = 8
First let's look at the brackets:
2(2x + 3)
To expand this we do 2 * 2x then add 2*3
so 2(2x + 3) = 4x + 6
Let's put this back into the orginal equation:
-4 + 4x + 6 = 8
The -4 + 6 can be put together to get 2 so:
2 + 4x = 8
Minus 2 from both sides:
4x = 6
Divide by four both sides:
x = 6/4
Simplify:
x = 3/2 ( = 1.5)
Hope this helps :-)
2007-04-19 22:32:10 · answer #3 · answered by Nick Solly 2 · 1⤊ 0⤋
-4+2(2x+3)=8
-4+4x+6=8
4x+6-4=8 or
4x+2=8 4x=8-2
2(2x+1)=2(4) 4x=6
2x+1=4 x=6/4
2x=4-1 x=3/2
2x=3
x=3/2
2007-04-19 22:39:54 · answer #4 · answered by saina 2 · 1⤊ 0⤋
- 4 + 4x + 6 = 8
4x + 2 = 8
4x = 6
x = 3/2
2007-04-19 22:33:30 · answer #5 · answered by Como 7 · 1⤊ 0⤋
multiply out the brackets and rearrange :)
-4 +4x + 6 = 8
4x +2 = 8
4x = 6
x = 6/4 = 1.5
2007-04-19 22:29:14 · answer #6 · answered by Possum 4 · 1⤊ 0⤋
The Result can be obtained with ease
4x+6=12
4x=6
x=3/2=1.5
2007-04-19 22:36:52 · answer #7 · answered by Ravishankar 1 · 1⤊ 0⤋
-4+4x+6=8
4x+2=8
4x=6
x=3/2
Check:
-4+2(2(3/2)+3)=8
-4+2(3+3)=8
-4+2(6)=8
-4+12=8
8=8
I hope this helps!
2007-04-20 04:39:24 · answer #8 · answered by Anonymous · 0⤊ 0⤋
-4 + 4x+6 = 8
4x+2 = 8
4x = 6
x =1.5
2007-04-19 22:43:53 · answer #9 · answered by Anonymous · 1⤊ 0⤋
-4 + 4x +6=8
4x+2=8
4x=6
x=1.5
2007-04-19 22:31:03 · answer #10 · answered by maidmaz 3 · 1⤊ 0⤋