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Simplifying 2x + 1 + 3x = 21 Reorder the terms: 1 + 2x + 3x = 21 Combine like terms: 2x + 3x = 5x 1 + 5x = 21 Solving 1 + 5x = 21 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 5x = 21 + -1 Combine like terms: 1 + -1 = 0 0 + 5x = 21 + -1 5x = 21 + -1 Combine like terms: 21 + -1 = 20 5x = 20 Divide each side by '5'. x = 4 Simplifying x = 4
| 3+-3+x+-1y= | | 2x+22-5=39 | | 26*2+5x*4=152 | | 2x^2-54x=0 | | 4x-3y=50 | | H=M-(20/100)M | | (-9/6x-2)(36x^2-4/7x) | | (W^3-2w+1)/(w^3+w^2-2) | | 89+83+x/3*3=3*90 | | 89+83+x/3*3=246 | | 15x-16=34x-4 | | 3x-9/5x-15 | | 89+83+x/3=90 | | f(x)=55 | | 3x+1=9x | | 3b+2a=5a-6 | | p=25+2x | | t/3-1/2=1 | | 3p+9=15r+3q | | 3p+9=15r | | (5+v)(5v-4)=0 | | -(11+5m)=4(7-2m) | | 27w^2+54w-9720=0 | | 5(8+x)=3(x+6) | | 2(d-7)=3(7-d) | | 3(4-x)=2(x+11) | | 7x+3(x-2)=-16 | | 5x-13=8-x | | 12x+6=3x+5 | | 1+7w=5(7-2w) | | 4.75=0.1522y-298.592 | | f(-5)=-1.3(-5)*1.3(-5)+3.4(-5)+1.2 |