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Simplifying (4x + 4) + -7 = 21 Reorder the terms: (4 + 4x) + -7 = 21 Remove parenthesis around (4 + 4x) 4 + 4x + -7 = 21 Reorder the terms: 4 + -7 + 4x = 21 Combine like terms: 4 + -7 = -3 -3 + 4x = 21 Solving -3 + 4x = 21 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 + 4x = 21 + 3 Combine like terms: -3 + 3 = 0 0 + 4x = 21 + 3 4x = 21 + 3 Combine like terms: 21 + 3 = 24 4x = 24 Divide each side by '4'. x = 6 Simplifying x = 6
| -2/3n=22 | | 5x+17=123 | | 5x-17=1233 | | 30t+25=35t | | 2/3n-5+8/9n=-19 | | x+(2x+9)=90 | | (9x^-8)/(3x^12) | | 2/9x=-4 | | -2x-18=(1-2x)+4x | | 26+8w=56+4w | | 132-(5x+15)=5(x+8)+x | | 9y+6=8y+8 | | 4[9+3(7-3)]= | | -14+3(x+10)=7(2x+4)+5 | | 438x+11=8 | | 7[6+9(6-2)]= | | 18-9/4=-5 | | 225x+300y=10x+63y | | 3x^2+25x+8= | | 225x+300y=10x^2+63y^2 | | 3b-6-10b-4= | | 3b-6-10b= | | (k+5)(k+5)(k+5)= | | x*y=40 | | +2/4=-2 | | 1/5(7y-2)+1/20(12y+21) | | 5+1/9=-31 | | 6=-3(2x+2)+7x | | 3(x+1)-8=4-2(3x-4) | | 5x+35=9005 | | t^6+11t^3+18= | | x^2+x^2+10x=600 |