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Simplifying 23 + 7n = 2n + -1(1 + 7n) 23 + 7n = 2n + (1 * -1 + 7n * -1) 23 + 7n = 2n + (-1 + -7n) Reorder the terms: 23 + 7n = -1 + 2n + -7n Combine like terms: 2n + -7n = -5n 23 + 7n = -1 + -5n Solving 23 + 7n = -1 + -5n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '5n' to each side of the equation. 23 + 7n + 5n = -1 + -5n + 5n Combine like terms: 7n + 5n = 12n 23 + 12n = -1 + -5n + 5n Combine like terms: -5n + 5n = 0 23 + 12n = -1 + 0 23 + 12n = -1 Add '-23' to each side of the equation. 23 + -23 + 12n = -1 + -23 Combine like terms: 23 + -23 = 0 0 + 12n = -1 + -23 12n = -1 + -23 Combine like terms: -1 + -23 = -24 12n = -24 Divide each side by '12'. n = -2 Simplifying n = -2
| 2c-.25=.75 | | x+20=-20 | | -9=6a+3a | | 5x^2-24x-37=0 | | 4n+32=-2-5(5n-1) | | x+70-20x=13 | | 1+4x-5x=1 | | 3x=9y+6 | | 23x-12=16x+52 | | 8x-12=3x+12.25 | | 7x-4=6x-3 | | 6(4n+2)=-28+4n | | 9a+9b+9c=5 | | 0.4d=2d+1.25 | | 7x-4=3x-6 | | 7w-6=3w+6 | | 4-3(4+8x)=11-5x | | 4x^2+7x-3-5x^2= | | 8x-4=12x-24 | | (61)10=(111101)2 | | 8x+12-5x=36 | | (15x-25)=4x | | 0.4x=2d+1.24 | | 29-4a=5(a+4) | | -63=15+n | | V=cmu | | -16t^2+24t=3 | | -6+r=-8(6-r) | | 12x+5=18x+5 | | (6a+10)+130=180 | | -4-5x=4-8(1-6x) | | 6(7n+8)+8(1-6n)=74 |