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Simplifying 21 = 3(n + -5) Reorder the terms: 21 = 3(-5 + n) 21 = (-5 * 3 + n * 3) 21 = (-15 + 3n) Solving 21 = -15 + 3n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-3n' to each side of the equation. 21 + -3n = -15 + 3n + -3n Combine like terms: 3n + -3n = 0 21 + -3n = -15 + 0 21 + -3n = -15 Add '-21' to each side of the equation. 21 + -21 + -3n = -15 + -21 Combine like terms: 21 + -21 = 0 0 + -3n = -15 + -21 -3n = -15 + -21 Combine like terms: -15 + -21 = -36 -3n = -36 Divide each side by '-3'. n = 12 Simplifying n = 12
| 6+8(-5x+7)=-258 | | 5n+15n=0 | | F(18)=40-1.25(18) | | -0.3x+2.13=-0.5+1.73 | | 9x-24=3*7+6x | | f(x)=50(0.75) | | x+114= | | X+(2x+6)+(2x-6)=180 | | -0.3x+2.13=0.5x+1.73 | | F(3)=40-1.25(3) | | 7x+8x=65 | | -4t+9=-5 | | 64=16+x | | -3x^2+7x-49=5x^2 | | (2x-1)=127 | | 4+14x= | | 36+15x=1x | | 21x=-13-2/x | | 4+3x=2x+6 | | -2x+2-1=-x+3 | | -2(5x-4)+3=4(-2x-6) | | 3r+4(5r+3)=150 | | 5[x-6]-4=16 | | 3x+3=-2x+48 | | x+21=2x+7 | | -2(8n+8)=-96 | | 3z+2=5z-3z | | 9x-48=6x-15 | | 55/297 | | 81=3-6(x-5) | | -16t^2+96t+180=75 | | 2[y+7]=18 |