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Simplifying -1 + 2x = 21 Solving -1 + 2x = 21 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 + 2x = 21 + 1 Combine like terms: -1 + 1 = 0 0 + 2x = 21 + 1 2x = 21 + 1 Combine like terms: 21 + 1 = 22 2x = 22 Divide each side by '2'. x = 11 Simplifying x = 11
| y-13=37 | | -w=25 | | 1.4x+7.1-5.3x+2.9= | | 6x+10=26 | | 5-4x=14+x | | k+(-4.21)=-14.3 | | 3(2x+6)-5x+6= | | (b+9/7)=4 | | k^2+10=25 | | 8+m+3m=16 | | -7(3x+8)-5x+6= | | 7y-4=9(3y+4) | | 2n-60=20 | | -x^4+7=x^2-2 | | d+4=-9 | | -10+3x=11 | | 7y-2=y+10 | | 9=8x-(2x-3) | | 2x+1/6-3x=-2 | | 7.22=2*3.14r | | 4x^2-3x^2=-14x | | 6-y=23-2y | | x-(3x+4)=-6 | | 4x-2-(x+3)= | | (9g)4=252 | | x+3+3x-1+2x+5=22 | | 5x=30-x | | 6x+4=4x-9 | | 4x-17-5(x-6)= | | 9x^2+25x-30=0 | | (14x+9)(5x-4)=0 | | 9x^2+25x=30 |