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Simplifying 4r + 7 + -1r = 19 Reorder the terms: 7 + 4r + -1r = 19 Combine like terms: 4r + -1r = 3r 7 + 3r = 19 Solving 7 + 3r = 19 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 3r = 19 + -7 Combine like terms: 7 + -7 = 0 0 + 3r = 19 + -7 3r = 19 + -7 Combine like terms: 19 + -7 = 12 3r = 12 Divide each side by '3'. r = 4 Simplifying r = 4
| 3x-3(6+2x)=27 | | 5x+3.50=29.50 | | 5x+7=4x-1 | | 2.4(3.1x+49)=75.9+0.87x | | (x^2+2x+13)= | | 5c+6-7c= | | 6r+1-12=11 | | 2t-12=12-6t | | 3x+16=61 | | (4x^2)-20x+25=0 | | 9r=63 | | 2x+3(x-4)=2(x+3) | | 8p-12=2+3p | | xm+7nx=7 | | R+1=3 | | (5x^3+35x^2+5x+35)= | | 88x+40=128 | | Y=3x^2-10x-8 | | 27+2(f-19)= | | 2.4(3.1x+48)=75.9+0.87x | | 4x-3x+6=90 | | m+14=22 | | 2+5n=42 | | 50y=20x-x^2 | | 4y=3y+10 | | (3x^6+6x^5)-(9x^4+6x^3)= | | -2p-3=-19 | | 30s^2-19s=63 | | 37=7y+64 | | 7y*4=24*4 | | 3x^6+6x^5= | | -3x+20=9x-2 |