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Simplifying 3x(4) + -7x(3) + 12x + -9 = 0 Reorder the terms for easier multiplication: 3 * 4x + -7x(3) + 12x + -9 = 0 Multiply 3 * 4 12x + -7x(3) + 12x + -9 = 0 Reorder the terms for easier multiplication: 12x + -7 * 3x + 12x + -9 = 0 Multiply -7 * 3 12x + -21x + 12x + -9 = 0 Reorder the terms: -9 + 12x + -21x + 12x = 0 Combine like terms: 12x + -21x = -9x -9 + -9x + 12x = 0 Combine like terms: -9x + 12x = 3x -9 + 3x = 0 Solving -9 + 3x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + 3x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + 3x = 0 + 9 3x = 0 + 9 Combine like terms: 0 + 9 = 9 3x = 9 Divide each side by '3'. x = 3 Simplifying x = 3
| 1.5+3(x-2)+4.5(X+7)=0 | | 0=x^4-0x^2-16 | | -2(t^2)-5t-3=0 | | (3x-5)-(-2x-7)= | | -7(-7+7b)+5(b+5)=-b-6b | | 8x-2(3x-5)=0 | | 7x-8=-3z-72 | | y=3x-6x-10 | | 0=4x^3-2x+1 | | 2z^2-6z+5=0 | | 10a+2b+8a+7b= | | 5z^2+(9-7i)z+2-6i=0 | | 4x^3-20x^3+25x=0 | | 2r-1(5-r)=13r+2r | | W-20=-10 | | 3x+4=5-7x | | x^3-30x^2+225x=20 | | -2w-4=-5w+5 | | x^3-30x^2+225x=250 | | -2(7v+1)=2(v-1) | | 6n+17+8=-5+3n | | 0.60=long(x) | | 7y-2x=57 | | 8c=14+9c | | 9-5xy=2 | | 3x+6+4y=18 | | 3b+2=4b-1 | | (5w-2)2= | | y=5.2x+58.2 | | 2(2a+.5)=3(a-.66) | | 4x(3x^2+5x-2)= | | -20-13z=20+7z |