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Simplifying 4r + -9 = 20 Reorder the terms: -9 + 4r = 20 Solving -9 + 4r = 20 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + 4r = 20 + 9 Combine like terms: -9 + 9 = 0 0 + 4r = 20 + 9 4r = 20 + 9 Combine like terms: 20 + 9 = 29 4r = 29 Divide each side by '4'. r = 7.25 Simplifying r = 7.25
| 96=4(4+5p) | | x+16=2(x-16) | | 3t-12=3 | | 6y-2+8y+14=90 | | -8=-4+2n | | -5(-5p+2)=-210 | | 5.6+x=-3 | | 6(n+-3)=54 | | 6(s-3)=2(9-3s) | | -3r+10=4 | | 8(7k-2)=432 | | 6d-3d+7d-6=4d | | 7-6/y=5 | | 100c+500=1500 | | 4b-8=4(b-2) | | -8x-19=29 | | 11.8=75.52 | | 60x+150=510 | | 6r+5=17 | | 5n+22=180 | | (x+1)*(x+2)=0 | | 2b-7=7 | | 2n+25=180 | | -5x=x-18 | | 2n+25=5n+22 | | 4(-7x+1)=228 | | 6(-6+1)=12 | | 7+7(5b-5)=147 | | x-(2x-2)+3=3x+9 | | 10(2.2+-b)=15.2 | | 8x-2y-5=16 | | 2(-3+4r)=-20+r |