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Simplifying 2x + 3(x + -4) = 21 Reorder the terms: 2x + 3(-4 + x) = 21 2x + (-4 * 3 + x * 3) = 21 2x + (-12 + 3x) = 21 Reorder the terms: -12 + 2x + 3x = 21 Combine like terms: 2x + 3x = 5x -12 + 5x = 21 Solving -12 + 5x = 21 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + 5x = 21 + 12 Combine like terms: -12 + 12 = 0 0 + 5x = 21 + 12 5x = 21 + 12 Combine like terms: 21 + 12 = 33 5x = 33 Divide each side by '5'. x = 6.6 Simplifying x = 6.6
| 3(1+y)= | | 0x=67 | | 88x=0 | | 0x+2=5 | | 3r^2+13r-10=0 | | u(s)=-6+3s+4 | | 44+7*3= | | -2.78n+0.12=-8.21 | | 5(6+3d)+4+5d= | | (4y+4)+(5y-22)=180 | | 8(-10n+10)+-10n= | | 10x*5=25 | | (5y-22)+(4y+4)=180 | | -8m-(2(11-2m)+4)=9m | | 3d+-9(3d+-2)= | | (5y)+(3y+48)=180 | | (4y+16)+(2y+14)=180 | | y=x^3-7x | | 8-x=-2x-12 | | F(x)=9(x+7)-4 | | 4r+-9r+-7+9= | | 19(40-x)=19 | | F(x+7)=9x^2+63-4 | | q=200+30x | | (x+112)=180 | | d+-5(-1+-6d)= | | 5+9(2+9n)= | | (15x+10)+(8x+38)=180 | | F(x+7)=9(x+7)-4 | | (2x+14)+(5x-2)=180 | | 2(3z+-9)= | | 36ab-48ab= |