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Simplifying -21 + 2n = 1 + -1(1 + -9n) -21 + 2n = 1 + (1 * -1 + -9n * -1) -21 + 2n = 1 + (-1 + 9n) Combine like terms: 1 + -1 = 0 -21 + 2n = 0 + 9n -21 + 2n = 9n Solving -21 + 2n = 9n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-9n' to each side of the equation. -21 + 2n + -9n = 9n + -9n Combine like terms: 2n + -9n = -7n -21 + -7n = 9n + -9n Combine like terms: 9n + -9n = 0 -21 + -7n = 0 Add '21' to each side of the equation. -21 + 21 + -7n = 0 + 21 Combine like terms: -21 + 21 = 0 0 + -7n = 0 + 21 -7n = 0 + 21 Combine like terms: 0 + 21 = 21 -7n = 21 Divide each side by '-7'. n = -3 Simplifying n = -3
| 2x+2-x+2x=3x-3+10-x | | -4(4n+1)+3= | | 32-8=8-x | | y^2+12x+4y-32=0 | | 15x-15=45 | | 35x+100=240 | | 1/3x2=0 | | 5v-13d+6+4v= | | x^(4/5)=0 | | 6.4-7-2.9r=r | | x^(4/5)(6x-24)^2=0 | | y-4y=2y+1-5y | | 6y+2-y=32 | | 4.75/c=570 | | 5=2lnx+4x+1 | | 4b+3=8a-13 | | -(-3)/5-9 | | 0=x^3+9h^2+14h-72 | | 3x/2-69 | | 5n-(1/2)g=12 | | c/4.75=570 | | .25(40-8x)=19x+2-5x | | 2-8/7-3 | | (2y+11)=4(4y+2) | | 4-2/9-1 | | 8=8+3a+8a | | 570-c=4.75 | | .1(2.5y-6)=.4(6y+7) | | y=h^3+9h^2+14h-72 | | W+5=0 | | 4.75+c=570 | | (3-4)+18*45=n |