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Simplifying 3r + 5(7 + -5r) = -40 + 3r 3r + (7 * 5 + -5r * 5) = -40 + 3r 3r + (35 + -25r) = -40 + 3r Reorder the terms: 35 + 3r + -25r = -40 + 3r Combine like terms: 3r + -25r = -22r 35 + -22r = -40 + 3r Solving 35 + -22r = -40 + 3r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3r' to each side of the equation. 35 + -22r + -3r = -40 + 3r + -3r Combine like terms: -22r + -3r = -25r 35 + -25r = -40 + 3r + -3r Combine like terms: 3r + -3r = 0 35 + -25r = -40 + 0 35 + -25r = -40 Add '-35' to each side of the equation. 35 + -35 + -25r = -40 + -35 Combine like terms: 35 + -35 = 0 0 + -25r = -40 + -35 -25r = -40 + -35 Combine like terms: -40 + -35 = -75 -25r = -75 Divide each side by '-25'. r = 3 Simplifying r = 3
| 416.71688=(2974)(r)(113/180) | | 37-x=10 | | 62*21=a | | 1/2n=16 | | 8-1/2m=16 | | 6221-952+401-1050=p | | -21x+37=0 | | 4.7x=3.6 | | 321-78+7=n | | 69.38=(1225)(r)(59/180) | | 3(5)+-2+3= | | 89+7+3*17=x | | x^2-18x+270=0 | | 4(1/2)= | | 3n+8=35 | | -2(1/3)= | | 20.8=-5.26 | | (x^-1y^1/2)^-1/3/x^1/5y^-1/2 | | 1.5(x+8)=4.8+0.6x | | 29x-97=-10 | | 67=(1457)(r)(0.4638888889) | | 20x^3/5x | | -x-3y=-30 | | y*2200*12=12*(y+5)*.8*2200 | | A=19839[1+(0.083)(1.166666667)] | | 19=100-9x | | y*2200=(y+5)*.8*2200 | | (2x+1)(7x-4)(5x+6)= | | y=(y+5)*.8 | | c-7=20 | | 3(20+x)=75 | | y=(y+10)*.8 |