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Simplifying 2(3c + -1) = 2c + 9 Reorder the terms: 2(-1 + 3c) = 2c + 9 (-1 * 2 + 3c * 2) = 2c + 9 (-2 + 6c) = 2c + 9 Reorder the terms: -2 + 6c = 9 + 2c Solving -2 + 6c = 9 + 2c Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-2c' to each side of the equation. -2 + 6c + -2c = 9 + 2c + -2c Combine like terms: 6c + -2c = 4c -2 + 4c = 9 + 2c + -2c Combine like terms: 2c + -2c = 0 -2 + 4c = 9 + 0 -2 + 4c = 9 Add '2' to each side of the equation. -2 + 2 + 4c = 9 + 2 Combine like terms: -2 + 2 = 0 0 + 4c = 9 + 2 4c = 9 + 2 Combine like terms: 9 + 2 = 11 4c = 11 Divide each side by '4'. c = 2.75 Simplifying c = 2.75
| R(21)=0.01x^2-x+21 | | X-25=6x | | 3+6(x+4)=4x | | n^6-7n^3-8=0 | | 2n+5=9n+3 | | 18x-3y+3=0 | | 16p^2-48p-160=0 | | -17x+15x=-28+34 | | 1.5y=6.75 | | 4.2=-2x^2+6x | | -4n+3n=7 | | x(x+5)=218 | | -8(a+6)=-104 | | 5x+x^2-14=180 | | 2-1y= | | 8=x^2+x-22 | | 2-1y=c | | -7y=9x | | a+a+b+b=50 | | 0=22-6x | | 6y=12x-6 | | 11=x^2+2x-4 | | (.75xa)-3=-9 | | -(-3+r)+3(1+r)=10 | | 23=3+4r+4 | | 23=3+4r | | 4(-4b-13)+18= | | 2.5n=1.5+8 | | 4.9t^2-12t=2 | | 12x+40xy= | | 1.7+.2x=.9x-6.7 | | -(3+r)+3(1+r)=10 |