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Simplifying 7x + 21 + -5x = 5x + -7 + x Reorder the terms: 21 + 7x + -5x = 5x + -7 + x Combine like terms: 7x + -5x = 2x 21 + 2x = 5x + -7 + x Reorder the terms: 21 + 2x = -7 + 5x + x Combine like terms: 5x + x = 6x 21 + 2x = -7 + 6x Solving 21 + 2x = -7 + 6x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6x' to each side of the equation. 21 + 2x + -6x = -7 + 6x + -6x Combine like terms: 2x + -6x = -4x 21 + -4x = -7 + 6x + -6x Combine like terms: 6x + -6x = 0 21 + -4x = -7 + 0 21 + -4x = -7 Add '-21' to each side of the equation. 21 + -21 + -4x = -7 + -21 Combine like terms: 21 + -21 = 0 0 + -4x = -7 + -21 -4x = -7 + -21 Combine like terms: -7 + -21 = -28 -4x = -28 Divide each side by '-4'. x = 7 Simplifying x = 7
| ((3x-9x)+7)=((x-6)+13) | | 7y+21-5x=5x-7+x | | 6a+5a+3b+9b= | | -8(2t+6)=16 | | 3(f-1)=-15 | | 10(s-5)=-102 | | 4h-(7h+1)=2 | | 6-7+8= | | xln(4)+x+1ln(2)=48 | | Logx=.175 | | 61=6x-8x-3x | | 8(4s+10)=432 | | 2x+3=-5x-11 | | 2(2l+1)=38 | | 2(a-9)=30 | | (u-9)*8=40 | | 4(4K+2)-8(K-1)=3(2K+2)-2 | | (q-6)*4=16 | | f(x)=3x^2-12x+7 | | (e+2)*4=12 | | (X+2y)+(4x+y)+(50)=180 | | 5x+2=6x-6+x | | .75-.25x=0.375 | | a+2b=b | | C(m)=0.15m+1.25 | | X+2y+4x+y+50=180 | | 30-x=5x | | 4n+5=73 | | q^2+2q+6=0 | | -3y+4x-1=4y+x | | 4n-5=73 | | 9-4w^2=0 |