I understand that you have to multiply both sides by LCD, which is 4, but it seems like my math instructions are leaving out the multiplication by 4 on the left side of the equation.
6 (x+6)
--------- = 4x - 1
4
2006-10-10 16:01:28 · 10 answers · asked by Survivor 3 in Science & Mathematics ➔ Mathematics
Something wrong to your basic of understanding... here is the solution..
6 (x+6)
--------- = 4x - 1
4
Expand it off and you will get
6(x+6) = 4(4x-1)
Now, multiply all and you will get
6x + 36 = 16x - 4
Move all the 'x' term in left hand side and the number in right, hence
6x-16x = -4-36
Simplify it and you will get
-10x = -40
Now, final step is to move the -10 to right hand side
x = (-40)/(-10)
and you will get
x = 4
2006-10-10 16:09:12 · answer #1 · answered by Mr. Logic 3 · 1⤊ 1⤋
(6(x + 6))/4 = 4x - 1
(3(x + 6))/2 = 4x - 1
but the way, using LCD is only involved when you have to values on the left side and one on the right, you have to multiply by 4 or in this case 2 to both sides, just because multipling is the opposite of dividing.
3(x + 6) = 8x - 2
3x + 18 = 8x - 2
-5x = -20
x = 4
ANS : x = 4
2006-10-10 23:16:36 · answer #2 · answered by Sherman81 6 · 1⤊ 0⤋
x = 7 1/4
2006-10-10 23:04:49 · answer #3 · answered by Anonymous · 0⤊ 2⤋
6(x+6)/4=4x-1multiply by 4
6(x+6)=16x-4 distribute on LHS
6x+36=16x-4 subtract 6x-4 from each side
16x-6x=36-(-4)
10x=40
x=4
check
6(4+6)/4=4*4-1
6*10/4=16-1
15=15
2006-10-10 23:10:32 · answer #4 · answered by yupchagee 7 · 1⤊ 1⤋
multiply BOTH SIDES by 4
6(x+6)= 4(4x-1)
6x+36=16x-4
6x-16x=-4-36
-10x=-40
x=4
2006-10-10 23:04:07 · answer #5 · answered by Anonymous · 1⤊ 1⤋
6(x+6)=4(4x-1)
6x+36=16x-4
36+4=16x-6x when moving across = change sign of the term!!
40=10x
x=4
2006-10-10 23:13:23 · answer #6 · answered by rwbblb46 4 · 1⤊ 1⤋
6x+36 = 4x-1.
so it equal 6x-4x = -37, 2x = -37, x = -37 divided 2. answer is -18.5
2006-10-10 23:05:21 · answer #7 · answered by Anonymous · 0⤊ 1⤋
6(X+6)=16x-4
2006-10-10 23:05:14 · answer #8 · answered by sllyjo 5 · 2⤊ 1⤋
multiply both sides by four!
2006-10-10 23:11:38 · answer #9 · answered by homeslice191 3 · 0⤊ 1⤋
6(x+6)
6x+36
I don,t no wat u asking?
2006-10-10 23:05:39 · answer #10 · answered by CoolCrab 2 · 0⤊ 2⤋