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Simplifying 3x + -1(x + 7) = 9 Reorder the terms: 3x + -1(7 + x) = 9 3x + (7 * -1 + x * -1) = 9 3x + (-7 + -1x) = 9 Reorder the terms: -7 + 3x + -1x = 9 Combine like terms: 3x + -1x = 2x -7 + 2x = 9 Solving -7 + 2x = 9 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + 2x = 9 + 7 Combine like terms: -7 + 7 = 0 0 + 2x = 9 + 7 2x = 9 + 7 Combine like terms: 9 + 7 = 16 2x = 16 Divide each side by '2'. x = 8 Simplifying x = 8
| 7.5(9+1.6)=29.25 | | (8x-8)+7=-10+9x | | x-2(2x-100)=500 | | 6.6*(8+x)=8*x | | 32-6x=4+3x | | x+2(2x-100)=500 | | 0.2x+0.8=9.6 | | -x+6y=30 | | 11.5/y=50 | | x=-16+48x | | R^2-2= | | x(x+6)+9=81 | | 4/x^2=0 | | 5c-2c+18=3+4c | | 0.9=logx | | x=-162+48x | | y^2-16y+64=16 | | 26x+13x^2=0 | | 0.75-0.35=6.35 | | 22x+10-2x=-2x+6 | | 40=(0.5)(60)x^2 | | -4/x^2=0 | | 4x+11=4x+22 | | 2x+x=3660 | | 8x-8/x-1 | | 11+15=0 | | 5(4x+-8)=7x+6 | | x*2+9*x+4=3*x-1 | | bx+40=8(x+a) | | 4x^2+8x+3=24 | | 3u^2+9u=0 | | x+(-14)=16 |