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Simplifying (2x + -11) + (x + 4) = 21 Reorder the terms: (-11 + 2x) + (x + 4) = 21 Remove parenthesis around (-11 + 2x) -11 + 2x + (x + 4) = 21 Reorder the terms: -11 + 2x + (4 + x) = 21 Remove parenthesis around (4 + x) -11 + 2x + 4 + x = 21 Reorder the terms: -11 + 4 + 2x + x = 21 Combine like terms: -11 + 4 = -7 -7 + 2x + x = 21 Combine like terms: 2x + x = 3x -7 + 3x = 21 Solving -7 + 3x = 21 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 + 3x = 21 + 7 Combine like terms: -7 + 7 = 0 0 + 3x = 21 + 7 3x = 21 + 7 Combine like terms: 21 + 7 = 28 3x = 28 Divide each side by '3'. x = 9.333333333 Simplifying x = 9.333333333
| 5a+6=7 | | 0.5r+3= | | f(x)=5x^2-8x+5 | | 2x-11+x+4=21 | | 35/42=24/r | | (1/2x-2/3x)*6=4*6 | | -2f^2+4f-2=0 | | 7x-2x-40=95 | | k^-4=1/256 | | 9p+3p-6p+15=40 | | -3=2x+3x-8 | | (9x+2)(2x^2-17x-9)=0 | | (2x-11)+x+4=21 | | 13x(-7-10x)=2 | | 30-(2x+3)=14 | | -d^2+4d-4=0 | | 120=-8t+200 | | 1000=16x+100 | | 81650.99=2*3.14*r^2+2*3.14*r*100.2 | | 18y-5y-8y=15 | | 3x-15y=-4 | | 1000=150x+8 | | 25-4x=13 | | 16y+4=40-3y | | w+(-3)=5 | | 800^(1/3) | | -32+x=17 | | 180+82+70+y=(4-2)180 | | 5t^2-8t-6=0 | | 62435.3832=226.708*w | | 1000=200+8x | | 9/12-4/12z=3/12 |