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Simplifying (x + 12) + (2x + 12) = 78 Reorder the terms: (12 + x) + (2x + 12) = 78 Remove parenthesis around (12 + x) 12 + x + (2x + 12) = 78 Reorder the terms: 12 + x + (12 + 2x) = 78 Remove parenthesis around (12 + 2x) 12 + x + 12 + 2x = 78 Reorder the terms: 12 + 12 + x + 2x = 78 Combine like terms: 12 + 12 = 24 24 + x + 2x = 78 Combine like terms: x + 2x = 3x 24 + 3x = 78 Solving 24 + 3x = 78 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-24' to each side of the equation. 24 + -24 + 3x = 78 + -24 Combine like terms: 24 + -24 = 0 0 + 3x = 78 + -24 3x = 78 + -24 Combine like terms: 78 + -24 = 54 3x = 54 Divide each side by '3'. x = 18 Simplifying x = 18
| 4x+6=4x-3 | | x+3x+3=4x+2 | | 6x=2x-1-(x-4) | | r^2+2t-1=0 | | -3(i+5)+(4i+2)=8 | | 3x(x-4)+2= | | 509.8104=2*3.14r^2+2*3.14*15.7r | | xy-5x-3y+18=0 | | 3/5.12/x.y/75 | | 6.5+y=16 | | 3x^2+8y^2=1 | | -21-2a=6(-7-a)+1 | | y-1.5=9.7 | | Y^6-3=11 | | 3q^4x2q^5/q^3 | | 9(x+4)=2x-3 | | 4x-8y=18 | | 6.2=3t+4+2t | | 4/5(m-1)-1/5m | | 3sinhx-coshx=1 | | 4y+116=(7y+6) | | 117=-3-8(x-7) | | 33=3h | | (4x+5y)(4x+5y)= | | l=15-3u | | 8x+6y=-2k | | 17-x=1/3. | | -3.75=0.2+r | | 9x-2y=5k | | (1+m^2)x^2+(5m-10)x+17=0 | | -7(2y+6)=7(y-6) | | 6.2a=0.0124 |