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Simplifying 4(r + -1) = 2(r + 4) Reorder the terms: 4(-1 + r) = 2(r + 4) (-1 * 4 + r * 4) = 2(r + 4) (-4 + 4r) = 2(r + 4) Reorder the terms: -4 + 4r = 2(4 + r) -4 + 4r = (4 * 2 + r * 2) -4 + 4r = (8 + 2r) Solving -4 + 4r = 8 + 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. -4 + 4r + -2r = 8 + 2r + -2r Combine like terms: 4r + -2r = 2r -4 + 2r = 8 + 2r + -2r Combine like terms: 2r + -2r = 0 -4 + 2r = 8 + 0 -4 + 2r = 8 Add '4' to each side of the equation. -4 + 4 + 2r = 8 + 4 Combine like terms: -4 + 4 = 0 0 + 2r = 8 + 4 2r = 8 + 4 Combine like terms: 8 + 4 = 12 2r = 12 Divide each side by '2'. r = 6 Simplifying r = 6
| 8n=m | | 5/7e+11=-14 | | 2(x+6)=5x-6 | | 2x-38=11x-43 | | 4.2+0.5y=8.1 | | -9*10=32 | | m+13=19 | | 5(4+7x)=300 | | -2(w+3)=3(w+4)+7 | | a-.5=2a-.60 | | 7(x-3)=15+y | | -1/2*1/3 | | 3a-8=32-a | | 9.2=1.5t+1.7t | | 8k-6=2k-18 | | 9.2=1.5+1.7 | | G/5+6/5=6 | | 2250=0.1144x-14.562 | | 3(2y-1)=33 | | 50=(9/5)c+32 | | 5t-1.2=8.9 | | 7x+2=2x+57 | | -0.5x+4.73=-0.7x+3.33 | | 5.7=-2.5x+18-1.6 | | 8(p+5)=24 | | a^11/6a^5 | | 3z=z-24 | | 2x+30=4x+13 | | -4m-7+m-2=6 | | (2x^4+3x^3-15x^2-32x-12)/(x+2) | | -0.5x+4.73=-0.7+3.33 | | 7w+4-3w=16 |