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Simplifying x + (x + 7) + (x + 8) = 30 Reorder the terms: x + (7 + x) + (x + 8) = 30 Remove parenthesis around (7 + x) x + 7 + x + (x + 8) = 30 Reorder the terms: x + 7 + x + (8 + x) = 30 Remove parenthesis around (8 + x) x + 7 + x + 8 + x = 30 Reorder the terms: 7 + 8 + x + x + x = 30 Combine like terms: 7 + 8 = 15 15 + x + x + x = 30 Combine like terms: x + x = 2x 15 + 2x + x = 30 Combine like terms: 2x + x = 3x 15 + 3x = 30 Solving 15 + 3x = 30 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + 3x = 30 + -15 Combine like terms: 15 + -15 = 0 0 + 3x = 30 + -15 3x = 30 + -15 Combine like terms: 30 + -15 = 15 3x = 15 Divide each side by '3'. x = 5 Simplifying x = 5
| 5x+1.5=8.5 | | y=10x+-45 | | f(10)=3x+10 | | x(x-2)=5 | | 10x+6y-8z=4 | | 4x+9.06=2x+13 | | 4x+3.5=9.9 | | 1/4n=3/4n=28 | | -5x-3y+4y=-2 | | 10a+40b=54 | | 4(4x-3)+6=-4 | | 13-4x=-7x+1 | | -4x-3y+4y=-2 | | 4x^2-16x+y^2+12=0 | | P+22=24 | | 20x+12y-16z=8 | | (8+2m)-8=8 | | -3x+4y-5z=8 | | 3(4s+1)=75 | | 15(17+h)=555 | | 2(2l+7)=54 | | -5x-2y+z=4 | | 12-3w=w+28 | | 20y=120-60x | | 6+2(x+2)=28-6x | | 3x-4y-3z=15 | | y=1/5x-4/5 | | 60z^3+30z= | | x+2y+5z=-4 | | -7(x-4)=28-6x | | 21x-175=224 | | 2x+4y+10z=14 |