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Simplifying (7x + 3) + (2x + 15) = 180 Reorder the terms: (3 + 7x) + (2x + 15) = 180 Remove parenthesis around (3 + 7x) 3 + 7x + (2x + 15) = 180 Reorder the terms: 3 + 7x + (15 + 2x) = 180 Remove parenthesis around (15 + 2x) 3 + 7x + 15 + 2x = 180 Reorder the terms: 3 + 15 + 7x + 2x = 180 Combine like terms: 3 + 15 = 18 18 + 7x + 2x = 180 Combine like terms: 7x + 2x = 9x 18 + 9x = 180 Solving 18 + 9x = 180 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -18 + 9x = 180 + -18 Combine like terms: 18 + -18 = 0 0 + 9x = 180 + -18 9x = 180 + -18 Combine like terms: 180 + -18 = 162 9x = 162 Divide each side by '9'. x = 18 Simplifying x = 18
| 3x^3+2x^2-7x+2=0 | | 8K^2-1=0 | | 6x-3=15x-66x | | 3x-2*(2x+1)=2x+28 | | 5x^2=-4x+12 | | X^2+x-306= | | -4x-8=-12x-6 | | 0.03x=4500.00 | | 1/2(8x-6)=1;1 | | 3x+v+w= | | 2/3n=4n-10n-1/2 | | 7r^2-39r+5=-3r | | 9x-(7x-3)=6x-27 | | D=2sin(0.5t-0.6)+5 | | 4x+y=0.5 | | 5x-130=3x-20 | | 16timesx+4timesy=2 | | 4-5n=-2n-14 | | (x+4)(x+k)=x^2+x-12 | | 0.20(y-5)+.06y=0.16y-2 | | r-5=-9+2r | | x-4/6=5/12 | | 3-2*8+2= | | -2g+6=12 | | 49=7/6x | | -7-6n=1+2n | | 11.95x=717.00 | | 4d-3-d=14-2 | | 1-3n=-5-n | | 90/165 | | 7y/6=49 | | x^2+50y=0 |