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Simplifying 2(2r + 5) + 1 = 5 + -2(3 + -1r) Reorder the terms: 2(5 + 2r) + 1 = 5 + -2(3 + -1r) (5 * 2 + 2r * 2) + 1 = 5 + -2(3 + -1r) (10 + 4r) + 1 = 5 + -2(3 + -1r) Reorder the terms: 10 + 1 + 4r = 5 + -2(3 + -1r) Combine like terms: 10 + 1 = 11 11 + 4r = 5 + -2(3 + -1r) 11 + 4r = 5 + (3 * -2 + -1r * -2) 11 + 4r = 5 + (-6 + 2r) Combine like terms: 5 + -6 = -1 11 + 4r = -1 + 2r Solving 11 + 4r = -1 + 2r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2r' to each side of the equation. 11 + 4r + -2r = -1 + 2r + -2r Combine like terms: 4r + -2r = 2r 11 + 2r = -1 + 2r + -2r Combine like terms: 2r + -2r = 0 11 + 2r = -1 + 0 11 + 2r = -1 Add '-11' to each side of the equation. 11 + -11 + 2r = -1 + -11 Combine like terms: 11 + -11 = 0 0 + 2r = -1 + -11 2r = -1 + -11 Combine like terms: -1 + -11 = -12 2r = -12 Divide each side by '2'. r = -6 Simplifying r = -6
| 12x+7-5x= | | 6x-6=2x+8 | | x-7.6=-4.6 | | (-18)(-11)= | | 5(x-5)+5x=-95 | | -25=x+(-8) | | 4n^2=49 | | -5+9(2-8)= | | p-10+9p-3= | | -7y+5=-13+7y | | x-0.8=3 | | -(y-6)-2y= | | -(x-6)-2x= | | (10-17)(1-2)= | | 25b+10b=5b+270 | | 21m=11m+340 | | 10b-2b=112 | | 6k+1=85 | | 6k+k=84 | | 7r-r=84 | | [1/2]6x= | | 10=x+2 | | 7r-3=2r+72 | | 6t+1=2t+93 | | (x^3-4x^2+10)+(5x^3+4x^2-8)=0 | | 4t=2t+268 | | 4x+10y=60 | | 9b-7b=192 | | 20x+5=24x+5 | | 2x-5=43 | | 20x+5=21x+5 | | 9b+7b=192 |