simplify  5x + 7y - x - 2y + 2x?
927852
Like terms have the same variable (or have no variable).  In  this expression you have two sets of like terms: Those with x, and those with y\nThose with x: 5x, -x, 2x\nAdd the coefficients:  (5-1+2)x = 6x\n\nThose with y: 7y, -2y\nAdd the coefficients: (7-2)y = 5y\n\n6x+5y  is the answer.\n\nHope this helps.
712395
9x+5/(x-4)+(-7x)/(x-4)\n=9x+5-7x/(x-4)\n=(2x+5)/(x-4)
679588
Multiply it out...\n2y+6y+24x-24y-6x\nThen combine\n-16y+18x OR\n18x-16y
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.
858168
1. 14x^2 +21x\n\na good way to start would be to factor out any common terms:\n\n7(2x^2 + 3x)\n\n7x(2x + 3)
859504
(x-7)(x-5)\nso x= +7, or +5
957977
5xy=(x+y)(x^2+2)\n5xy=x^3+2x+x^2y+2y\n5xy'+5y=3x^2+2+x^2y'+2xy+2y'\n5xy'-x^2y'-2y'=3x^2-5y+2xy\ny'(5x-x^2-2)=3x^2-5y+2xy)\ny'=(3x^2-5y+2xy)/(5x-x^2-2)
197692
y-5-y-5=7y\n-10=7y\ny=-10/7
728357
3x^2y^2(2y+3y)/3x^2y^2\n=5y
741076
1/x+3/x+2=7\nMultiply by x getting:\n1+3+2x =7x\n4-5x =0\n0x* -5x +4 =0\n\n7/2x+2/x-1=4\nMultiply by 2x getting:\n7 +4 -2x =8x\n11-10x = 0\n0x* -10x +11 = 0\n\nx*+7x+2=2x+4\nx* +7x -2x +2 -4=0\nx* +5x -2 = 0\n\n4x*-3x=2x*+7 \n4x* -2x*-3x -7 =0\n2x*-3x-7 =0\n\n2x+3/x-1=x/4\nMultiply by x getting:\n2x* +3 -2x = x*/4\n2x* - x*/4 -2x +2=0\n2.25x* -2x +2 = 0\n\nThere, its done simply by multiplying and transposing terms to get what you want. You can move any term from one side of the equation to the other as long as you change its sign fro minus to plus or plus to minus.
701694
7x + y = 1 (subtract 7x from both sides)\ny = 1 - 7x\n\n3x + 2y = -9 (substitute in for y)\n3x + 2(1 - 7x) = -9\n3x + 2 - 14x = -9 (subtract 2 from both sides)\n-11x = -11\nx = 1\n\ny = 1 - 7x (substitute in for x)\ny = 1 - 7(1)\ny = 1 - 7\ny = -6\n\nAnswer: (1, -6)
940849
2x + 4y = -6\nX - 3y = 7 multiply by two\n\n2x + 4y = -6\n2x - 6y = 14\n{subtract equation 2 from equation 1}\n\n2x - 2x + 4y - (-6y) = -6 - 14\n10 y = -20 divide by 10\ny = -2\n\n\nplug into a equation \n2x - 6(-2)  = 14\n2x + 12 = 14\n2x = 2\nx = 1\n\nx = 1, y = 2
210403
8x-5x+3=x-7+10\n8x-5x+3-x=-7+10\n8x-5x-x=-7+10-3\n3x-x=3-3\n2x=0
198742
28x^6 - 14x^4 + 35x\n(7x)*(4x^5 - 2x^3 + 5)
736590
7(5y+5x) = 105\nopen brackets first\n\n35y+35x=105\n\ndivide everything by 35\n\ny+x=3\n\nmake y the subject\n\ny=3-x
1133153
7 - 2[4-6+2x] - 8+ x=6\n\n7 - 2[-2+2x] - 8 +x =6\n7 + 4 - 4x - 8 + x =6\n3 - 3x = 6\nx = -1\n\nDon't listen to the math goober - plug the value in and check it.
777329
5x + 10 + 7x - 14 = -2x\n\n12x -4 = -2x\n\n14x = 4\n\nx = 4 / 14 = 2 / 7  (not 2/17)