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Simplifying 7n + -20 = 1 + 4n Reorder the terms: -20 + 7n = 1 + 4n Solving -20 + 7n = 1 + 4n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-4n' to each side of the equation. -20 + 7n + -4n = 1 + 4n + -4n Combine like terms: 7n + -4n = 3n -20 + 3n = 1 + 4n + -4n Combine like terms: 4n + -4n = 0 -20 + 3n = 1 + 0 -20 + 3n = 1 Add '20' to each side of the equation. -20 + 20 + 3n = 1 + 20 Combine like terms: -20 + 20 = 0 0 + 3n = 1 + 20 3n = 1 + 20 Combine like terms: 1 + 20 = 21 3n = 21 Divide each side by '3'. n = 7 Simplifying n = 7
| 9t-9=-25+t | | 6.20x+9.40y=170 | | 9x+48=7x-2(n-2) | | x=170-6.20y/9.40 | | (8/7)(8/7) | | cos(3x)+sin(6x)=0 | | 3x-(3x+4)=7 | | 2x^2+14x-343=0 | | 2(3-4y)+8y=6 | | 2x^2-14x-343=0 | | (27c^9)^1/3 | | 2x^2-14x-298=0 | | Y=80+0.9Y | | 6t-2=-11+9t | | 2t-13=-4+t | | -5u(u-8)(u+1)=0 | | (6-y)(2y-7)=0 | | (w+8)(w+1)=0 | | 3x^2+27x-5.5=0 | | 10r+10=70 | | 4a-2a-7+6= | | 6x+16=2+x+16 | | x+3y-5z=12 | | -25x^2+45x-18=0 | | x^2/9-y^2/16=0 | | p=220/(6.75*3.25) | | 36s^2-25g^2=0 | | 6x+6=95 | | (4+u)(5u+8)=0 | | 6x+6=55 | | 6x^2-2x-8= | | 0=21 |