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Simplifying 51 = n + (n + 20) Reorder the terms: 51 = n + (20 + n) Remove parenthesis around (20 + n) 51 = n + 20 + n Reorder the terms: 51 = 20 + n + n Combine like terms: n + n = 2n 51 = 20 + 2n Solving 51 = 20 + 2n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2n' to each side of the equation. 51 + -2n = 20 + 2n + -2n Combine like terms: 2n + -2n = 0 51 + -2n = 20 + 0 51 + -2n = 20 Add '-51' to each side of the equation. 51 + -51 + -2n = 20 + -51 Combine like terms: 51 + -51 = 0 0 + -2n = 20 + -51 -2n = 20 + -51 Combine like terms: 20 + -51 = -31 -2n = -31 Divide each side by '-2'. n = 15.5 Simplifying n = 15.5
| 2r^3= | | 236=x+.07x | | 45000-22000x=0 | | 1+3x-10=0 | | 2x+1=50 | | 2cos^2(x)+3cos(x)-5=0 | | 0.3(x+8)=0.5x+0.6 | | 6x+138=9x+189 | | 6/36=x/48 | | 7m-m=24 | | 7x+196=4x+166 | | 8x+46=6x+70 | | 1/3sinpi | | 3(4x-5)-8x+20=5(2x+3)-6x-10 | | 175000.00+550.00c=220650.00 | | (25+3x)2=86 | | t*6-8=15 | | 3x^3+x+2=0 | | 7+2x=11-2(x-3) | | -7-4x=7x+24 | | 16-x=8 | | y=.3(0)-7 | | 35000.00+1680.00c=220650 | | a*4+1=15 | | 9(2x-1)-3x=3(12+x) | | 4x^2+5x=400 | | 4x+5=-8+-6 | | 2x-[5x-(6x+2)]=14-x | | 4(2x+3)-8=11x-3(x+2) | | 5000/60 | | 35000.00+1680.00c=300440.00 | | 17y-51=4y+40-13 |