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Simplifying (2x + 7) + (3x + -3) = 21 Reorder the terms: (7 + 2x) + (3x + -3) = 21 Remove parenthesis around (7 + 2x) 7 + 2x + (3x + -3) = 21 Reorder the terms: 7 + 2x + (-3 + 3x) = 21 Remove parenthesis around (-3 + 3x) 7 + 2x + -3 + 3x = 21 Reorder the terms: 7 + -3 + 2x + 3x = 21 Combine like terms: 7 + -3 = 4 4 + 2x + 3x = 21 Combine like terms: 2x + 3x = 5x 4 + 5x = 21 Solving 4 + 5x = 21 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 5x = 21 + -4 Combine like terms: 4 + -4 = 0 0 + 5x = 21 + -4 5x = 21 + -4 Combine like terms: 21 + -4 = 17 5x = 17 Divide each side by '5'. x = 3.4 Simplifying x = 3.4
| -4(2x+-1)=84 | | ln(e^7x)=16 | | 2x+7+13=60 | | 3y-3-5y-1=0 | | 3y+4x=-9 | | 3(x-10)=120 | | -x-x-x=12 | | y=15x^2-9x | | (n+73)(n+77)=10000 | | 2x+3-5x=8 | | 2x+5x+x=64 | | 8x+3-2x+1=10 | | 3.2-Y=4 | | (n+7)(n+9)=1000 | | 5x+3-4x+1=0 | | (x)+(2x-20)+(3x-10)=180 | | (n+7)(n+9)=100 | | 6x-18-5=3+2x | | 8y+5=7x+5z | | (x+20)+(3x)+(60)=180 | | 7x+5z=5+8y | | 4(3x+2)=-16 | | X^2+15x=5x-9 | | (x^2-xy)(x^2-xy)(x^2-xy)= | | 2x+5=6x-25 | | (-8/-3)(-4/1) | | 3x^4-xy= | | 6/2x(x-3)=2x^2= | | 6=(x-3)(2x+5) | | 2/3-0=A | | 2/3-0 | | 2y-(-10)=16 |