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Simplifying 6x + 3(4 + -5x) = 12 + -1x(7 + -4) 6x + (4 * 3 + -5x * 3) = 12 + -1x(7 + -4) 6x + (12 + -15x) = 12 + -1x(7 + -4) Reorder the terms: 12 + 6x + -15x = 12 + -1x(7 + -4) Combine like terms: 6x + -15x = -9x 12 + -9x = 12 + -1x(7 + -4) Combine like terms: 7 + -4 = 3 12 + -9x = 12 + -1x(3) Reorder the terms for easier multiplication: 12 + -9x = 12 + -1 * 3x Multiply -1 * 3 12 + -9x = 12 + -3x Add '-12' to each side of the equation. 12 + -12 + -9x = 12 + -12 + -3x Combine like terms: 12 + -12 = 0 0 + -9x = 12 + -12 + -3x -9x = 12 + -12 + -3x Combine like terms: 12 + -12 = 0 -9x = 0 + -3x -9x = -3x Solving -9x = -3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3x' to each side of the equation. -9x + 3x = -3x + 3x Combine like terms: -9x + 3x = -6x -6x = -3x + 3x Combine like terms: -3x + 3x = 0 -6x = 0 Divide each side by '-6'. x = 0 Simplifying x = 0
| 21x+38y-5y+11x+13y= | | -1=1+8x | | (y-1)/5+y/4=(y+3)/2+1 | | 6x-7=14x+17 | | 2+9v=65 | | 5n-18= | | 4x=-x+5 | | 2x+3(x-6a)=12 | | -8x+6=-10x | | 9k+12-5= | | 2(5-2z)=20-2(z+1) | | 2x-20=6x | | -9+x=4x | | (3/(x-5))=((-2/(x+1)))+((3/(x-5)(x+1))) | | x^2+5z+2=0 | | 3w-2+w=5+7w-3 | | 4-(6x-8)=3(x+1) | | 5h+(11-h)=-5 | | -54=-7x+9 | | 3+2/t=6 | | p/8-5=-6 | | 1/3(d+9)=12 | | 16/9=r-1/3 | | 4(x+3)=2x+3x | | z/3+2=0 | | 20-4x=28 | | 4+9x-18=6-6x-3 | | 5/8X+4/8=-3/8X+1/8 | | (81x^8/9x^5)/(9x^6/5x^3) | | 6x+2.5=14.5 | | x/4+x/9=5/4 | | 2a-2=5a |