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Simplifying 12r + 5 + (-7r) + 8 = 0 Reorder the terms: 5 + 8 + 12r + (-7r) = 0 Combine like terms: 5 + 8 = 13 13 + 12r + (-7r) = 0 Combine like terms: 12r + (-7r) = 5r 13 + 5r = 0 Solving 13 + 5r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + 5r = 0 + -13 Combine like terms: 13 + -13 = 0 0 + 5r = 0 + -13 5r = 0 + -13 Combine like terms: 0 + -13 = -13 5r = -13 Divide each side by '5'. r = -2.6 Simplifying r = -2.6
| 0.2x-0.3=2.7 | | f(x)=4x+-16 | | X+78=682 | | 7/16=n/6 | | R/2-2R=6 | | (5v-2)(9+v)=0 | | 0.9x-0.2=9.7 | | 6x=59.88 | | -7x=2x-20 | | https://media.edgenuity.com/evresources/3111-04-03/mc007-1.jpg | | 4/3*3.14*8*8*8 | | 12-35x+10=-1 | | 44=-x+179 | | 4/3*3.14*4*4*4 | | 199-u=113 | | 7x+13=97 | | 7z+12=54 | | -7x=2x-30 | | 0.12x=1344 | | 14x=294 | | 3^-2m=1/243 | | -2=-6/h | | 9m+3=120 | | 251=-y+46 | | 4x-4=-x-1 | | [x-11]=-12 | | 251=y+46 | | 4/5m-7=13 | | 7a-8a-10a= | | 3x/13=5/2x | | 3.5(m+12)=2.5(20+m) | | -20+4y=12 |
