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Simplifying 21 = 5x + 3 + -2x Reorder the terms: 21 = 3 + 5x + -2x Combine like terms: 5x + -2x = 3x 21 = 3 + 3x Solving 21 = 3 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. 21 + -3x = 3 + 3x + -3x Combine like terms: 3x + -3x = 0 21 + -3x = 3 + 0 21 + -3x = 3 Add '-21' to each side of the equation. 21 + -21 + -3x = 3 + -21 Combine like terms: 21 + -21 = 0 0 + -3x = 3 + -21 -3x = 3 + -21 Combine like terms: 3 + -21 = -18 -3x = -18 Divide each side by '-3'. x = 6 Simplifying x = 6
| 15/2×10/19 | | 8y-4=7y+2 | | 1/3f-4=5 | | 1/2s=3200 | | .044(83-55b)=7.04 | | s+10=2s+-2 | | 1.1x+1.2x+-5.4=-54 | | 2K=-3(K-1)+1 | | 5=9-4c | | [2x+-3]+1=-17 | | 60+9a=10x-2 | | -3.6x-8+2.3x=4.7x-2 | | [2x-3]+1=17 | | X^2+1.5x=80 | | -16x^2+240x=0 | | 2b+4=-18-19b | | X^2+1.5=-80 | | 120+15m=50+25m | | x^2+1.5=80 | | y=-8*7+16x*6+9 | | -16x^2+240x=800 | | -8x+6=54 | | P^5q^6/p^4q^3= | | 5x+7x-4x-5=51 | | 4/5-9/4=r | | 16x^2+240x=800 | | 8x(6x+5)=1 | | (8t^2-t-6)(2t^2+8t-1)= | | 16(x-6)=4(x+44) | | (A^11b^4)(a^13b)= | | 4/5=r/2 | | -8+6=54 |