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Simplifying 12x + -4 = 7x + 21 Reorder the terms: -4 + 12x = 7x + 21 Reorder the terms: -4 + 12x = 21 + 7x Solving -4 + 12x = 21 + 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. -4 + 12x + -7x = 21 + 7x + -7x Combine like terms: 12x + -7x = 5x -4 + 5x = 21 + 7x + -7x Combine like terms: 7x + -7x = 0 -4 + 5x = 21 + 0 -4 + 5x = 21 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 = 25 5x = 25 Divide each side by '5'. x = 5 Simplifying x = 5
| r^4-1296= | | 2=7-a | | 4/5x+9/10=11/2x+7/5 | | 3(2x+1)-x=3(x-2)+1 | | x/8+5=-4 | | (49)7= | | m-(7/4)=3 | | 216=-8(1+4p) | | 6y+3(y-4)=4(y+1)-2 | | 1.5*-3y=6 | | 15X-7=-23 | | 1.33-b=.33 | | 2r+8=5r | | 6/7=x/45 | | (3v-6)/(7)+(5v-5)/(4)=13 | | (-7)3= | | (53x+52y)+(-8x+45y)= | | m-7/4 | | 2r+8=5t | | 0.3y+0.7y= | | 5d-8=3-7d | | 2+3x/7+2-x/3=10/21 | | 2(6+2x)+2(x)=90 | | 6=(7v-9)/(3)-(7v-5)/(6) | | -5t/9-2t/9=14 | | x+74+124+x=180 | | .50x+.15(70)=34.5 | | -5x+15=-5(3-X) | | 3=(8v-8)/(7)+(5v+7)/(4) | | 5-7x=51 | | a/6-3=a/5+2 | | 1/33^-5 |