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Simplifying 7d + -4 = 6 + 2d Reorder the terms: -4 + 7d = 6 + 2d Solving -4 + 7d = 6 + 2d Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-2d' to each side of the equation. -4 + 7d + -2d = 6 + 2d + -2d Combine like terms: 7d + -2d = 5d -4 + 5d = 6 + 2d + -2d Combine like terms: 2d + -2d = 0 -4 + 5d = 6 + 0 -4 + 5d = 6 Add '4' to each side of the equation. -4 + 4 + 5d = 6 + 4 Combine like terms: -4 + 4 = 0 0 + 5d = 6 + 4 5d = 6 + 4 Combine like terms: 6 + 4 = 10 5d = 10 Divide each side by '5'. d = 2 Simplifying d = 2
| 500+0.21x=850 | | 5-(x-3)=-4x | | 3.5X+4=18 | | 0.05+x=2.06 | | 6x=40-x | | 3+2z-1=9z+2-5z | | (5x+4)(6x-4)= | | 30=1800x | | 4(y+-5)=6y+11 | | (x-1)(4x-8)=0 | | 8(y+-5)=6y+11 | | 8d+5-3d=2+3 | | (6x+4)(6x-4)= | | 2x+25=180-y | | 3+2z-1=9z+21-5z | | (4x^2-2x+8)-(x^2+3x-2)=0 | | 42a/3-a-5= | | -4x-4=5+6x | | (4x^2-2x+8)-(x^2+3x-2)=1 | | 5y-2y= | | -.20(10d-5)=9 | | 3(x-8)-3x=-24 | | 32x^2+28x+32=0 | | -.20(10d-5)= | | -4q+1.7=-23.5-1.2q | | 22=5b+7(b-2) | | 6r-3=11 | | -z+z=21 | | -36=-5h-4h | | 7p=6o-3p | | -15+31=-2(x+5) | | -7(7-4x)=9 |