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Simplifying (7x + 3) + -1(2x + 1) = 0 Reorder the terms: (3 + 7x) + -1(2x + 1) = 0 Remove parenthesis around (3 + 7x) 3 + 7x + -1(2x + 1) = 0 Reorder the terms: 3 + 7x + -1(1 + 2x) = 0 3 + 7x + (1 * -1 + 2x * -1) = 0 3 + 7x + (-1 + -2x) = 0 Reorder the terms: 3 + -1 + 7x + -2x = 0 Combine like terms: 3 + -1 = 2 2 + 7x + -2x = 0 Combine like terms: 7x + -2x = 5x 2 + 5x = 0 Solving 2 + 5x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 5x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 5x = 0 + -2 5x = 0 + -2 Combine like terms: 0 + -2 = -2 5x = -2 Divide each side by '5'. x = -0.4 Simplifying x = -0.4
| 125r^2-20= | | 13x+4=4(3x+1)-x+5 | | A=0.433x^2 | | 2x-[-13]= | | 4(x^3)-(4x)=0 | | -x+1+6x=-2+2x+12 | | -n^2=n^2+400 | | w^2+4w-192=0 | | 4x-13=12x+11 | | y=(x-(1+2i))(x-(1-2i)) | | 6x+3+x=1+5x+0 | | n^2+6n=72 | | 6x^2-36x+54=0 | | 12x-10=-13+9x | | 15x^2-10x= | | ln(x)+ln(3x)=4 | | x^2+7x-55=-25 | | 24x-3=-16x+27 | | 8.4x+78.04=-11.6x+77.88 | | 2n^2+9n-5= | | 5x+13=10x-12 | | -2z(z-4)-(3z-2)=-2-(6z-2) | | (x-10)(x+4)=0 | | 3x^2+1x(-5x+4)= | | 0=x^2-2x-5 | | 7x+13=4x-17 | | -(4y+2)-(-3y-5)=-2 | | 7x+9y=11 | | ar+ar^2=9 | | 3+6p-2=5p+29-3p | | 2y+7=5y-8 | | ar+ar=9 |