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Simplifying 7(n + -3) + 5n = 5 + 2(1 + 4n) Reorder the terms: 7(-3 + n) + 5n = 5 + 2(1 + 4n) (-3 * 7 + n * 7) + 5n = 5 + 2(1 + 4n) (-21 + 7n) + 5n = 5 + 2(1 + 4n) Combine like terms: 7n + 5n = 12n -21 + 12n = 5 + 2(1 + 4n) -21 + 12n = 5 + (1 * 2 + 4n * 2) -21 + 12n = 5 + (2 + 8n) Combine like terms: 5 + 2 = 7 -21 + 12n = 7 + 8n Solving -21 + 12n = 7 + 8n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-8n' to each side of the equation. -21 + 12n + -8n = 7 + 8n + -8n Combine like terms: 12n + -8n = 4n -21 + 4n = 7 + 8n + -8n Combine like terms: 8n + -8n = 0 -21 + 4n = 7 + 0 -21 + 4n = 7 Add '21' to each side of the equation. -21 + 21 + 4n = 7 + 21 Combine like terms: -21 + 21 = 0 0 + 4n = 7 + 21 4n = 7 + 21 Combine like terms: 7 + 21 = 28 4n = 28 Divide each side by '4'. n = 7 Simplifying n = 7
| 4n=9.8 | | 8x+15=-4+51 | | 4=9.8 | | -3-y=5 | | 6x+7y=17 | | 4x^2+7x-12=0 | | 7+na=15 | | 2=t+5 | | 10x^2+88x=18 | | -8-2= | | 2-y=5 | | 2x^2+4x=6 | | 1-y=5 | | 2(-8)= | | y+4.2=6 | | 2(3f-3)=18 | | x^2=2x+35 | | z+37=74 | | x^3+4x^2-12x-48=0 | | x=5y+5 | | t-2t+6=-16 | | 5+2(y+5)=20 | | x^3-4x^2-4x+16= | | 1*3(x+4)=14 | | y=4+2x | | 8(0)+2y=24 | | -6=8+7x | | 19-c=11 | | -2a+3+3a=5-25 | | 8x-2(0)=24 | | 8-k=40 | | -(5x-4)-(6x-6)+9=-8(x-1)-(6x+7)+3 |