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Simplifying 12 + 18 + -9 = n Combine like terms: 12 + 18 = 30 30 + -9 = n Combine like terms: 30 + -9 = 21 21 = n Solving 21 = n 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. 21 + -1n = n + -1n Combine like terms: n + -1n = 0 21 + -1n = 0 Add '-21' to each side of the equation. 21 + -21 + -1n = 0 + -21 Combine like terms: 21 + -21 = 0 0 + -1n = 0 + -21 -1n = 0 + -21 Combine like terms: 0 + -21 = -21 -1n = -21 Divide each side by '-1'. n = 21 Simplifying n = 21
| 1/2a^2-8=9 | | 18+18-9=n | | 5+6+g= | | x^2-2x^5+7x^4= | | 6x+5+7x-4+6x+5+7x-4= | | 6+8+(-4)+(-1)= | | (4w-3)(9+w)=0 | | 5=-5.9+v | | 3x3/4=24 | | 8x-8=-12 | | 5y=6x+9 | | -4x-3=3x-52 | | 1/6d=64 | | 1-y^8= | | 14a-7= | | 4.5r=216 | | x^2+8x+5= | | s-10=20.28 | | (-11)(-2)+(-9)= | | 4x-12=20.5 | | 7+7x=3x+55 | | 3f-8=12f+8 | | [23-12]x(-2)-2= | | 4x-8=41 | | 17.25+1.13-0.65-2.87+55= | | x+95=242 | | 4x-11=20.5 | | -8-4x=x-58 | | x^2+7x+10=x+1 | | 17.25+1.13-.65-2.87+55= | | 7.6a+10=86 | | (-12)(-7)= |