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Simplifying 13r + -28 = 9r + 32 + -2(r + 6) Reorder the terms: -28 + 13r = 9r + 32 + -2(r + 6) Reorder the terms: -28 + 13r = 9r + 32 + -2(6 + r) -28 + 13r = 9r + 32 + (6 * -2 + r * -2) -28 + 13r = 9r + 32 + (-12 + -2r) Reorder the terms: -28 + 13r = 32 + -12 + 9r + -2r Combine like terms: 32 + -12 = 20 -28 + 13r = 20 + 9r + -2r Combine like terms: 9r + -2r = 7r -28 + 13r = 20 + 7r Solving -28 + 13r = 20 + 7r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-7r' to each side of the equation. -28 + 13r + -7r = 20 + 7r + -7r Combine like terms: 13r + -7r = 6r -28 + 6r = 20 + 7r + -7r Combine like terms: 7r + -7r = 0 -28 + 6r = 20 + 0 -28 + 6r = 20 Add '28' to each side of the equation. -28 + 28 + 6r = 20 + 28 Combine like terms: -28 + 28 = 0 0 + 6r = 20 + 28 6r = 20 + 28 Combine like terms: 20 + 28 = 48 6r = 48 Divide each side by '6'. r = 8 Simplifying r = 8
| (X+21)=147 | | 22.5x=203*1.5 | | (13x+x^2)-(x+13)=0 | | 22.5x=203*2 | | 5x-(12ax)/(-3x) | | 13r-28=9r | | 5.5x=49.6*4.5 | | 12-16x=4+12x | | -5(3c)=30-6(c+8) | | 3(2x-5)=-12 | | 4n+24+3n+23= | | (x+4)(x-6)-(x+3)(x-7)= | | 22.5x=203*5 | | 6x^2+8=-2x | | 5t-4=2t+8 | | -11+x=0 | | 5(2x+9)=25 | | 5.5x=49.6*2.5 | | 7/16×5/13 | | 2(7b+6)-4=12 | | W+7w=48 | | 7inx-4=7 | | 6x-2=2(2x+8) | | 3e(x+7)+2=14 | | 11+6=26 | | 2(7b+6)+-4=12 | | 1.2f=120 | | 3x^2+29x=0 | | 5x-3+6x-11= | | 2(y+4)+7(y-5)+6= | | 6x+1=-15 | | 0y+3.8=38.8 |