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Simplifying -4 = -7n + -4(1 + -2n) -4 = -7n + (1 * -4 + -2n * -4) -4 = -7n + (-4 + 8n) Reorder the terms: -4 = -4 + -7n + 8n Combine like terms: -7n + 8n = 1n -4 = -4 + 1n Add '4' to each side of the equation. -4 + 4 = -4 + 4 + 1n Combine like terms: -4 + 4 = 0 0 = -4 + 4 + 1n Combine like terms: -4 + 4 = 0 0 = 0 + 1n 0 = 1n Solving 0 = 1n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-1n' to each side of the equation. 0 + -1n = 1n + -1n Remove the zero: -1n = 1n + -1n Combine like terms: 1n + -1n = 0 -1n = 0 Divide each side by '-1'. n = 0 Simplifying n = 0
| -25x^2+20x-4=0 | | 3x^3+8x^2-33+10=0 | | -8x-5x=117 | | x^3-x-20=0 | | 1(0)-2y=3 | | -4(-4+3)-6x=4(x-6)-4 | | 8=3+4 | | 6a=1500 | | 30+(-30)=-30n | | 2x+22-7x=8-6x | | 13x^2+8.82x-81=0 | | 5(w-4)=9+12 | | 5x+3=y+1 | | 0.2(c+6)=5.8 | | 1=-6+1.2Y | | 8x+4=6x+18-4 | | -30=8x+6(x-3) | | 2(-3)+y=6 | | 9x+9=16y | | -4-7x-4+6=30 | | sin^2(3x-1)+cos^2(3x-1)= | | 7b+-7+-8b=-15 | | 9p=3000 | | 12x=9x+6 | | 6x-3=y+5x | | (2a^2+5a-3)-(5a^2+4a-7)= | | 4=3+.6Y | | 9x+5-10=2x-6 | | (2a^2+5a)-3-(5a^2+4a-7)= | | (Y+5)c=3 | | 3=3+.6Y | | 0.25x=300 |