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Simplifying (6x + 9) + (-7x + 3) = 0 Reorder the terms: (9 + 6x) + (-7x + 3) = 0 Remove parenthesis around (9 + 6x) 9 + 6x + (-7x + 3) = 0 Reorder the terms: 9 + 6x + (3 + -7x) = 0 Remove parenthesis around (3 + -7x) 9 + 6x + 3 + -7x = 0 Reorder the terms: 9 + 3 + 6x + -7x = 0 Combine like terms: 9 + 3 = 12 12 + 6x + -7x = 0 Combine like terms: 6x + -7x = -1x 12 + -1x = 0 Solving 12 + -1x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + -1x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -1x = 0 + -12 -1x = 0 + -12 Combine like terms: 0 + -12 = -12 -1x = -12 Divide each side by '-1'. x = 12 Simplifying x = 12
| 78=3x^2+21x | | 4+6(-12x+11)=3x-11 | | -2y-7=8y+13 | | 6.8y+27=-3.6 | | 5(2x-8)=2(5x+3) | | y=-x^2-4x-2 | | (2x+8)+(-3x+9)= | | 3y=18-5x | | -4a+9+7a=9a-3a | | 6+65x=52x+14 | | j+(-16)=47 | | -5-5x=-2(4+3x) | | -2+3x=3+6x | | 2y+15=6 | | m^3+0m^2+9m=0 | | 5+77x=44x+23 | | 5x+16=141 | | -3a+7=55 | | 40-5n=7(1+4n) | | b-5b-6=0 | | 3v+x=w^2 | | 20x+5=85 | | 144/8x=1 | | 25-4x=5-9x | | 34x*9=5 | | 5x-20=3(x-2) | | -8+3n=28 | | _21/3 | | (2x-8)+(9x+1)= | | 3-9(m+3)=9m-24 | | 3a+7b=8.9 | | 8+2b=40 |