2d+d+1=3d-6-7d

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Solution for 2d+d+1=3d-6-7d equation:


Simplifying
2d + d + 1 = 3d + -6 + -7d

Reorder the terms:
1 + 2d + d = 3d + -6 + -7d

Combine like terms: 2d + d = 3d
1 + 3d = 3d + -6 + -7d

Reorder the terms:
1 + 3d = -6 + 3d + -7d

Combine like terms: 3d + -7d = -4d
1 + 3d = -6 + -4d

Solving
1 + 3d = -6 + -4d

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Add '4d' to each side of the equation.
1 + 3d + 4d = -6 + -4d + 4d

Combine like terms: 3d + 4d = 7d
1 + 7d = -6 + -4d + 4d

Combine like terms: -4d + 4d = 0
1 + 7d = -6 + 0
1 + 7d = -6

Add '-1' to each side of the equation.
1 + -1 + 7d = -6 + -1

Combine like terms: 1 + -1 = 0
0 + 7d = -6 + -1
7d = -6 + -1

Combine like terms: -6 + -1 = -7
7d = -7

Divide each side by '7'.
d = -1

Simplifying
d = -1

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