7=1+2d

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Solution for 7=1+2d equation:


Simplifying
7 = 1 + 2d

Solving
7 = 1 + 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.
7 + -2d = 1 + 2d + -2d

Combine like terms: 2d + -2d = 0
7 + -2d = 1 + 0
7 + -2d = 1

Add '-7' to each side of the equation.
7 + -7 + -2d = 1 + -7

Combine like terms: 7 + -7 = 0
0 + -2d = 1 + -7
-2d = 1 + -7

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

Divide each side by '-2'.
d = 3

Simplifying
d = 3

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