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Simplifying x + (x + 1) + 3x = 81 Reorder the terms: x + (1 + x) + 3x = 81 Remove parenthesis around (1 + x) x + 1 + x + 3x = 81 Reorder the terms: 1 + x + x + 3x = 81 Combine like terms: x + x = 2x 1 + 2x + 3x = 81 Combine like terms: 2x + 3x = 5x 1 + 5x = 81 Solving 1 + 5x = 81 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 5x = 81 + -1 Combine like terms: 1 + -1 = 0 0 + 5x = 81 + -1 5x = 81 + -1 Combine like terms: 81 + -1 = 80 5x = 80 Divide each side by '5'. x = 16 Simplifying x = 16
| 7f+11=74 | | 2=4g-12 | | (-2a-3b)-(2c-5a)= | | 12=5b-18 | | 35x-28y+7=0 | | 4(5u-2)=52 | | 4(x-2)=5(x+4) | | 0=-16t^2+10t+10 | | 0=-16t^2+22t-8 | | 0=-16t^2-2t+20 | | 0=-16t^2+36t-10 | | 2+u=-9 | | 3x-1=2x+9 | | 66.25=x+.15x | | 3x^2-6x^2+5=0 | | 6(4x-2)-4(6x-6)= | | 4(8x-3)-8(4x+3)= | | (x-2)(x^2-6x+5)=0 | | -10x-6x= | | (2x-2)(5x-4)=0 | | 6d^2+20d+16=0 | | 2xy=2 | | 5+x=-10 | | 4x+3+8x-11=10.5x+4 | | 6(x+4)+2(x-1)= | | -x^2+5x+36=0 | | 2+x=18 | | 7x-8+3x+5=8x+9 | | -2x^2+5x+36=0 | | (9x^3-13x^2+2x-8)=0 | | 4x-10=28 | | 3d+4=16 |