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Simplifying 7(x + 1) + -5(x + 2) = 9 Reorder the terms: 7(1 + x) + -5(x + 2) = 9 (1 * 7 + x * 7) + -5(x + 2) = 9 (7 + 7x) + -5(x + 2) = 9 Reorder the terms: 7 + 7x + -5(2 + x) = 9 7 + 7x + (2 * -5 + x * -5) = 9 7 + 7x + (-10 + -5x) = 9 Reorder the terms: 7 + -10 + 7x + -5x = 9 Combine like terms: 7 + -10 = -3 -3 + 7x + -5x = 9 Combine like terms: 7x + -5x = 2x -3 + 2x = 9 Solving -3 + 2x = 9 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 + 2x = 9 + 3 Combine like terms: -3 + 3 = 0 0 + 2x = 9 + 3 2x = 9 + 3 Combine like terms: 9 + 3 = 12 2x = 12 Divide each side by '2'. x = 6 Simplifying x = 6
| 21=-7/2x | | 7/9=n/180 | | 14x-12=3x+11 | | 50/4=100/x | | U+2.8=4.72 | | 8x+12=20x-18 | | 4c=6.4 | | 5x^2+11664=13689 | | 8(1+3a)+4(-6-2)=-6a+2a | | 2t+3(1-5t)= | | 7-8[9-(4y-6)]= | | 23-7=x-8 | | x+1=4x-5-x-2 | | 8x-33+7x-57=90 | | 9x+32+4x+135=180 | | (-8x/z^3)^2 | | lx-3l=lx-7l | | P+0.004x=60 | | 5000=.08x | | 187/5=561/x | | X/2=120/1.6 | | 12x-33=20x-2 | | -5x+10x=8x+9 | | (7+v)(2v+3)=0 | | x-4=9x+-19 | | 5[(4+9)-2]= | | 2y+6=4y+2 | | logbx=2/3 | | -4x^2-7x-15=0 | | 2x^2+14x+9-x^2+8x+16=0 | | C=GN | | (5x-3)/(-2) |