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Simplifying (2x + -6) + (3x + -3) = 21 Reorder the terms: (-6 + 2x) + (3x + -3) = 21 Remove parenthesis around (-6 + 2x) -6 + 2x + (3x + -3) = 21 Reorder the terms: -6 + 2x + (-3 + 3x) = 21 Remove parenthesis around (-3 + 3x) -6 + 2x + -3 + 3x = 21 Reorder the terms: -6 + -3 + 2x + 3x = 21 Combine like terms: -6 + -3 = -9 -9 + 2x + 3x = 21 Combine like terms: 2x + 3x = 5x -9 + 5x = 21 Solving -9 + 5x = 21 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 + 5x = 21 + 9 Combine like terms: -9 + 9 = 0 0 + 5x = 21 + 9 5x = 21 + 9 Combine like terms: 21 + 9 = 30 5x = 30 Divide each side by '5'. x = 6 Simplifying x = 6
| 7y-12=3y | | x^2-2y^2=0.5 | | -1(4x-1)=3x | | 9x+-3(x+8)=14+5x-34 | | 0.5x-0.33333333(x-5)=3x | | 9x+-3(x+8)=6(x-3)+6 | | 8(7-d)=-24 | | -8(1-5m)-7(m+5)= | | 7x+28=5x+26 | | 0.7n-15+7.3n=14.5 | | 7x+-5=3x+-5 | | 8n-3(n-1)=-5n+33 | | 81x^2+x+36= | | 6y-8x=18 | | (t+6)(t-4)= | | 12*2-6/3= | | (x+12)+(x+17)=21 | | 12*3-6/3= | | 0.2x-0.16666667(x-5)=6x | | 6(x-1)=9(x-2) | | -9x+5-18=2 | | 7x+-5=3x-5 | | 11x+16=4x+17 | | (t-6)(t-4)= | | 3(c+4)=8 | | y+7=y | | 0.5x-0.33333333(x-2)=3x | | 2.12x+12.72=25.44 | | -2y+10=-2(3y+11) | | -4n(n+7)+8(1-7n)= | | 0.5x-0.33(x-2)=3x | | 2.12x+12.82=25.44 |