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Simplifying 21x + -7 = 5(4x + 2) + -3 Reorder the terms: -7 + 21x = 5(4x + 2) + -3 Reorder the terms: -7 + 21x = 5(2 + 4x) + -3 -7 + 21x = (2 * 5 + 4x * 5) + -3 -7 + 21x = (10 + 20x) + -3 Reorder the terms: -7 + 21x = 10 + -3 + 20x Combine like terms: 10 + -3 = 7 -7 + 21x = 7 + 20x Solving -7 + 21x = 7 + 20x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20x' to each side of the equation. -7 + 21x + -20x = 7 + 20x + -20x Combine like terms: 21x + -20x = 1x -7 + 1x = 7 + 20x + -20x Combine like terms: 20x + -20x = 0 -7 + 1x = 7 + 0 -7 + 1x = 7 Add '7' to each side of the equation. -7 + 7 + 1x = 7 + 7 Combine like terms: -7 + 7 = 0 0 + 1x = 7 + 7 1x = 7 + 7 Combine like terms: 7 + 7 = 14 1x = 14 Divide each side by '1'. x = 14 Simplifying x = 14
| -8+11= | | -15+12= | | x*2=16 | | 10(v+3)-4v=3(2v+1)-7 | | 3y+2x=26 | | 12/.075=x+10 | | 1.08x(1.075)=12265.49 | | 12265.49=1.08x | | -8/15=x-11/12 | | 6y^2=13y-5 | | 0.6(s-8)=9 | | 5(x+3)+9=-2(x-2)+2 | | -2=4+x | | 2u^2+6u-8=0 | | -(6-6a)-(7+5a)-20=-(3-6a)+(-a)+2 | | -8m+41-4(m-2)=7m-(5m-3)-3m+2 | | -[4z-(11z+1)]=1+(6z+2) | | -8p-2(6-6p)=2(p-3)-6 | | 4x+5(x-7)=4(x-5) | | 2x+34=40 | | 2x+3n=19 | | 2x+3x=19 | | 5(x+1)+3(x-1)=5 | | y=0.4x+4.58 | | -3(u+9)=-5u-17 | | y+15y=5y | | 2w^2+5w-88= | | (r-7)(r+2)= | | 5y-4=2y+11 | | 12265.49=1.08x(1.0175) | | 6(2n-5)=-90 | | 5x=10x |