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Simplifying x + 21 = 21 + -1x Reorder the terms: 21 + x = 21 + -1x Add '-21' to each side of the equation. 21 + -21 + x = 21 + -21 + -1x Combine like terms: 21 + -21 = 0 0 + x = 21 + -21 + -1x x = 21 + -21 + -1x Combine like terms: 21 + -21 = 0 x = 0 + -1x x = -1x Solving x = -1x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add 'x' to each side of the equation. x + x = -1x + x Combine like terms: x + x = 2x 2x = -1x + x Combine like terms: -1x + x = 0 2x = 0 Divide each side by '2'. x = 0 Simplifying x = 0
| 3y+5y=-64 | | y-(y-1)= | | 2-5x-3=34 | | y+16=23 | | 33,000+1.4=121,200 | | 4x+(4-x)= | | 7x-28=7x+21 | | 5+7x=11x+7x | | -6(11-8x)=12 | | -4.9x^2+30.5x=0 | | 4x+8x-2x=10x | | 5(134x+153)=4,785 | | 9n=-6+10n | | -3(2x+2)=-24 | | -13=24+5(x-3.4) | | -8y+10=-7y | | 2z^2+2z+1=0 | | 56x-8=12-3x | | 148=64+6x | | 2y+5-y=-3(y-6) | | (2+4)+4(383949+73838)= | | 6x-9-4x+2= | | w*4.7+(1-w)*11.8=10 | | 3(175x+152)=2,556 | | 10-5(x-6)=115 | | -2sin^2(x)+3cos(x)+3=0 | | (3+b)*(3-b-a-2)+(a-1)*(b-1)= | | 4(4x-3)=12 | | 18(4-3x)=162 | | 30+00.20=94 | | 464+7p=700 | | 30+20=94 |