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Simplifying 3[x + 1] = 21 Reorder the terms: 3[1 + x] = 21 [1 * 3 + x * 3] = 21 [3 + 3x] = 21 Solving 3 + 3x = 21 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 3x = 21 + -3 Combine like terms: 3 + -3 = 0 0 + 3x = 21 + -3 3x = 21 + -3 Combine like terms: 21 + -3 = 18 3x = 18 Divide each side by '3'. x = 6 Simplifying x = 6
| 6=4x+6y | | 102=8a+5a+3a | | y=(3y+9) | | (25+9/5)+33= | | 2(a-10)-7= | | (5x^2-2)(x^2-4x+4)= | | x^3+9x^2+9x+10=0 | | 4x^2-35+49= | | 7y+-1=2(y+3)+-2 | | -6w-44=7(w+3) | | -10+3(2p+2)= | | 2b+8.95=23.65 | | 0.5m-6.4=4.9-0.1m | | 2(9-6)= | | x+-60=-69 | | 4c+2+5c=-4 | | 102=(-8s)+5+6 | | -8x-8=8 | | (5x^2-2x+4)+(9x^2-4x+5)-(3x^2+7)= | | 3(-2z-8)=-90 | | -31+y=-68 | | 3-5(-7x-6)= | | -8+4y=4 | | -4y(80)+2y=25 | | x(4+x)=96 | | x^3+9x^2+9x-10=0 | | 12m^2=10-37m | | -31+y=60 | | 95+y=60 | | (5v+9)(5-v)=0 | | -8c+2c= | | 1/8t-1/32+1/2t=1/2+t |