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Simplifying 5 + 12r + -4 = 7r + 82 + -4r Reorder the terms: 5 + -4 + 12r = 7r + 82 + -4r Combine like terms: 5 + -4 = 1 1 + 12r = 7r + 82 + -4r Reorder the terms: 1 + 12r = 82 + 7r + -4r Combine like terms: 7r + -4r = 3r 1 + 12r = 82 + 3r Solving 1 + 12r = 82 + 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. 1 + 12r + -3r = 82 + 3r + -3r Combine like terms: 12r + -3r = 9r 1 + 9r = 82 + 3r + -3r Combine like terms: 3r + -3r = 0 1 + 9r = 82 + 0 1 + 9r = 82 Add '-1' to each side of the equation. 1 + -1 + 9r = 82 + -1 Combine like terms: 1 + -1 = 0 0 + 9r = 82 + -1 9r = 82 + -1 Combine like terms: 82 + -1 = 81 9r = 81 Divide each side by '9'. r = 9 Simplifying r = 9
| 7n+4a=41 | | y=3(x+10)2-2 | | 2a+4+4a-10=180 | | -7(8-m)=-91 | | Z=1.666 | | =1+(10-1)(-5.7) | | 3(d+9)=3(d-6) | | -4k-1=42 | | n+7-6n=12 | | 2n-8+8n=6+3n | | =1+(4-1)(-5.7) | | 5y+6=42 | | 5n^2+4=2n^2+10 | | =1+(n-1)(-5.7) | | -5-2v-7=-4 | | E=nhv | | (X-37)=(x-42) | | 3n^2+2=77 | | -2b=-4-3b | | -3+(4-1)(-2.2)= | | (X+10)=(x+20) | | -y-10=15-2y | | 2n+5=3n-4 | | 2x+4=-3x+1 | | 5(4x-2)=24 | | 5x+17+23-5=37x+5 | | 0.6n=12-0.4n | | 5x^2=85 | | -3+(4+1)(-2)= | | -19=5w-4 | | 5x+x+12=180 | | -3+(1-1)(-2.2)= |