what's the answer to x=2x?
467127
0\nWhy?\nSubtract x from each side.\nx - x = 2x - x\n0 = x
905206
8x - 2 = 3x - 2\n8x = 3x\n5x = 0\nx = 0
197379
x is anything less than 1.\n4 x1=4 so 1 cannot be the answer (unless the < had a line underneath it)\n4x0=0 which is less than 4\n4x -2= -8
809248
Just break it into parts. X=1x. X can be any other variable but the thing that matters is that all the variables are the same. 1x-.8x=.2x. Then .2x-2.9x= -2.7x. It simplifies down to -2.7x but there is know way to figure out what the value of X is. If the equation was x-.8x-2.9x=any thing a value for x would be possible to find but there is known and so there is no way to find the value of x on it's own.
715412
The - before the parenthases negates the signs of whats in there.\nx-(4-x)=0 becomes x-4+x=0 \nAdd the 4 to both sides and add the x's together.\nx-4+x=0 becomes 2x=4\nDivide both sides by 2.\n2x=4 becomes x=2.\nTo check plug the 2 in for x.\n2-(4-2)=0 becomes 2-2=0
484958
sin 2x=2 sinx . cos x\ncos 2x=(cos x)^2-(sin x)^2\ncos 2x=2 (cos x)^2 -1\ncos 2x=1- 2 (sin x)^2\ntan 2x=(sin 2x)/(cos 2x)\n\nor you can \nsin 2x=1\nlet 2x=y\nsin y=1\ny=90 degree + 360 degree\n2x=90 degree + 360 degree\nx=45 degree + 180 degree\nso x={45,225,....}degree\n\ntan x+cot x=2/sin 2x:\ntan x+cot x\n=(sin x/cos x )+(cos x/sin x)\n=((sin x)^2+(cos x)^2)/(sin x . cos x)\n=1/(sin x . cos x)\n=2/2(sin x . cos x)\n=2/sin 2x\nso it is an identity
921786
2x=(x+5)+1\n2x=x+6\nx=6\n\nthe numbers are 6 and 11
26076
=7(1-x)+2x(1-x)\n=7-7x+2x-2x^2\n=7-5x-2x^2
907934
2x(x - 2) = 3(x + 10)\n2x² - 4x = 3x + 30\n2x² - 7x - 30 = 0\n(2x + 5)(x - 6) = 0\nx = -5/2 or 6 ← option d
1104082
2(x-9)=x-(-8)\n2x-x-18=8\nx=26\n\n\n\nits  26
149693
3 - 2x = 5\n--> -2x = 5 - 3\n--> -2x = 2\n--> x = 2/(-2)\n--> x = -1 the answer!\n\nYou can check the answer by substituting the vale in the original eqn"\n3 - 2x\n= 3 - 2 (-1)\n= 3 + 2\n= 5
859187
I'll do one for u.\nIn the first,\nMultiplying both sides by x*,we get\nx+3x+2x*=7x*\n4x+2x*=7x*\nMoving 4x and 2x* to the R.H.S.\n5x*-4x+0=0\nThus 5x*-4x=0\nAttempt the others in the same manner.
565951
the answer is zero b'coz at the end, X-X is equal to zero.
141310
to solve for X, you have to separate X from everything else. in that problem 2X+3X=5, you would combine the 2X and 3X to get 5X. so the equation end up as 5X=5. from there, divide both side by 5. 5X/5=X and 5/5=1 so X=1.
1046507
[2x/(x+3)(x-3)]*[(x-3)/4(x)]\ncancelling 2 and x-3 we will get\n=x/(x+3)2(x)\nsimplify we will get\n=x/(2x^2+6x)
1033116
A X = D\nX = A^(-1) D. (A inverse * D)\n Do it ur self.
825795
OK,as the first one is already done,I am doing the rest for you\n4(2x-6)=x+2 =>8x-24=x+2  =>8x-x=2+24  =>7x=26  =>x=26/3=8 2/3  (3) 2(x+5)+1=3(x-1)+4   =>2x+10+1=3x-3+4 =>2x-3x=-3+4-10-1  => -x=-4  =>x=1  (5)x+6=4(4x-1)   =>x+6=16x-4  =>x-16x=-4-6  => -15x=-10  =>x=-10/-15=2/3 [after reducing]