what's 10-3x = 2x-8x + 40?
917326
10-3x=2x-8x+40\n10-3x=-6x+40\n10+3x=40\n3x=30\nx=10\n:)
859816
Translating your question into algebra:\n\n8x + 3x = 9 + 12x\n11x = 9 + 12x\n11x - 11x - 9 = 9 - 9 - 11x + 12x\n-9 = x
83153
There are a couple of ways to work this out, I will take the easiest to explain.\n\n(x-3)(x^3+3x^2+9x+27) Can be rewritten as:\n\n(x)(x^3+3x^2+9x+27)+(-3)(x^3+3x^2+9x+27) Now, multiply those out.\n\nx^4+3x^3+9x^2+27x-3x^3-9x^2-27x-81 Now, sort by like powers of x\n\nx^4+3x^3-3x^3+9x^2-9x^2+27x-27x-81 Simplify\n\nx^4-81
864245
3x/(x - 9) - 27/(x - 9)\n= 3x-27/(x - 9)\n= 3(x - 9)/(x - 9)\n= 3
998496
x^3-3x^2+10x-30 R 10\nit's x+3 / x^4+0x^3+x^2+0x-80\n              x^4+3x^3\n             -------------\n                    -3x^3+x^2\n                    -3x^3-9x^2\n                    -------------\n                             10x^2+0x\n                             10x^2+30x\n                             --------------\n                                      -30x-80\n                                      -30x-90\n                                     ------------\n                                              10
521740
They look from pretty different levels!\n1.\n102x + 3 = 8\n102x + 3 - 3 = 8 - 3\n102x = 5\n(102x)/102 = 5/102\nx = 5/102\n\n2.\n15 + 2log2 x = 31\nFor this one, you'll need:\nln x = (log2 x)(ln 2)\nlog2 x = (ln x)/(ln 2)\n15 + 2(ln x)/(ln 2) = 31\n15 - 15 + 2(ln x)/(ln 2) = 31 - 15\n2(ln x)/(ln 2) = 16\n(ln 2)2(ln x)/(ln 2) = 16(ln 2)\n2(ln x) = 16(ln 2)\n2(ln x)/2 = (16/2)(ln 2)\nln x = 8(ln 2)\ne^(ln x) = e^(8ln 2)\nx = e^(8ln 2)\nx = (e^8)(e^(ln 2))\nx = (e^8)(2)\nx = 2e^8\nand 2e^8 is aproximately 5961.8839
447914
-4(2x+8)=32\n-8x-32=32\n-8x=64\nx=-8\n\nEDIT: The guy above missed a sign.  Insert -8 into the original equation to see if it checks out (it does).
863984
4x-3+2x=15\n4x+2x-3=15\n4x+2x=15+3\n6x=18\nx=18:6\nx=3\n\n4*3-3+2*3=15\n12-3+6=15\n9+6=15\n15=15 ...so x=3
1009982
a.   First multipy -2 times (x-4) to get -2x+8\nb.   Then 5-2x+8 to get -2x+13\nc.   then 3 times (-2x+13) to get -6x+39\nd.   then add 6x to both sides to get 39=8x+9\ne.   subtract 9 on both sides to get 30=8x\nf.   divide both sides by 8 to get x=(30/8) or (15/4)
895527
2x^2-8x+3x-12\n2x(x-4)+3(x-4)\n2x+3 = 0 or x-4= 0\nx = -3/2 or x = 4\n\n2x^2+10x-72\n2x^2+18x-8x-72\n2x(x+9)-8(x+9)\nx = 4 or x = -9\n\nx^2+6x-x-6\nx-1 = 0 or x+6 = 0\nx = 1 or x = -6
744341
8/5x-2/3x=4/15\nmultiply by 15x\n24-10=4x\n4x=14\ndividing by 4\nx=3 1/2\nifit is (8/5)x-(2/3)x=4/15\nmultiply by 15\n24x-10x=4\n14x=4\ndividing by 14\nx=4/14\n=2/7
885758
2(-x+4)+3x=(-x)+3x\n(-2x + 8) + 3x  = 2x\nx + 8 = 2x\n(x + 8) - x = (2x) - x\n8 = x
19519
=3(5+4x)-3x(5+4x)\n=15+12x-15x-12x^2\n=15-3x-12x^2
968475
(2x sqrt(2x)) (3 sqrt(5x))\n= (2x*3) (sqrt(2x*5x))\n= (6x) (sqrt(10x^2))\n= (6x) sqrt(x^2) sqrt(10)\n= (6x)(x) sqrt(10)\n= (6x^2) sqrt(10)
342762
x2+5x-2x-10\n\n*answer*\n\nx2+3x-10
843375
3x + 1 = 5x - 15\n16 = 2x\nx = 8
695176
6x^2-3x-4x+2\n3x(2x-1)-2(2x-1)\n(2x-1)(3x-2)