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Simplifying 25 = 5(5r + 4) + -5(1 + 7r) Reorder the terms: 25 = 5(4 + 5r) + -5(1 + 7r) 25 = (4 * 5 + 5r * 5) + -5(1 + 7r) 25 = (20 + 25r) + -5(1 + 7r) 25 = 20 + 25r + (1 * -5 + 7r * -5) 25 = 20 + 25r + (-5 + -35r) Reorder the terms: 25 = 20 + -5 + 25r + -35r Combine like terms: 20 + -5 = 15 25 = 15 + 25r + -35r Combine like terms: 25r + -35r = -10r 25 = 15 + -10r Solving 25 = 15 + -10r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '10r' to each side of the equation. 25 + 10r = 15 + -10r + 10r Combine like terms: -10r + 10r = 0 25 + 10r = 15 + 0 25 + 10r = 15 Add '-25' to each side of the equation. 25 + -25 + 10r = 15 + -25 Combine like terms: 25 + -25 = 0 0 + 10r = 15 + -25 10r = 15 + -25 Combine like terms: 15 + -25 = -10 10r = -10 Divide each side by '10'. r = -1 Simplifying r = -1
| -10(x-7)-3x= | | 2(r+7)+4r=8 | | 2x-8=22 | | 3x^2=-4x+15 | | -4a+2(a+9)= | | 55x+176=313.50 | | 14b=168 | | 15+7x=50 | | 7x+10=-7 | | 4(r+1)+3r= | | 4y+(2y-4)= | | 15a-54= | | 2b+4-b-4= | | 8x^3+1=0 | | -17=3x-11 | | 0=2w+5w-300 | | -3(m+7)=9 | | 0=2w+5-300 | | 6s-(3s-2)= | | 8x-5=12x+1 | | -3m+7=9 | | 3-4x=5(3-2x) | | X^2-2x-x=0 | | x-7=-3 | | r+8=-2 | | 5-6x=0 | | -(n+2)+3(n-2)= | | x+16.28=100 | | x-16.28=100 | | -7(0.9h)=3.78 | | 67.35=x-19.15 | | 3x-4x-5x=6x-7x |