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Simplifying 9 + -2d = 5d + -12 Reorder the terms: 9 + -2d = -12 + 5d Solving 9 + -2d = -12 + 5d Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-5d' to each side of the equation. 9 + -2d + -5d = -12 + 5d + -5d Combine like terms: -2d + -5d = -7d 9 + -7d = -12 + 5d + -5d Combine like terms: 5d + -5d = 0 9 + -7d = -12 + 0 9 + -7d = -12 Add '-9' to each side of the equation. 9 + -9 + -7d = -12 + -9 Combine like terms: 9 + -9 = 0 0 + -7d = -12 + -9 -7d = -12 + -9 Combine like terms: -12 + -9 = -21 -7d = -21 Divide each side by '-7'. d = 3 Simplifying d = 3
| n(n-7)=0 | | x-18=3x+8 | | 180=x+y+36 | | (4x-6)+(x-6)=48 | | (5x-9y)(5x-9y)= | | 2m+5=6m-27 | | v^2-g^2=0 | | 5(4x+3)-8=3(2-4x)+17 | | -3+3(-4x+5)=-18-6x | | 5(2v-1)+2v+7=4(v+3)-2v | | 6b^2-20b-16=0 | | 700=2.50V-500 | | 2x^3+13x^2-60=0 | | (m)+(m+2)+(m+4)= | | 3a+1=-3-6(a-1) | | s-5=25.11 | | 3=3t(3-t) | | 5x-32=x+8 | | 700=2.50-500 | | 2sen^2x+cos^2x-1=0 | | 16x-4=45 | | 2z+4=4(2z-2) | | -4(x+3)=10+7x | | 400=2.50V-500 | | -5(k+1)+3=-4k-20 | | 8b-36=5(-3+b) | | 6x-4+2x+13=90 | | X+36=y | | 8x-2(x+5)=2(x+1) | | m=mx+n | | -6z+9=9 | | 240=2.50V-500 |