40+d=37-d

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Solution for 40+d=37-d equation:


Simplifying
40 + d = 37 + -1d

Solving
40 + d = 37 + -1d

Solving for variable 'd'.

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

Add 'd' to each side of the equation.
40 + d + d = 37 + -1d + d

Combine like terms: d + d = 2d
40 + 2d = 37 + -1d + d

Combine like terms: -1d + d = 0
40 + 2d = 37 + 0
40 + 2d = 37

Add '-40' to each side of the equation.
40 + -40 + 2d = 37 + -40

Combine like terms: 40 + -40 = 0
0 + 2d = 37 + -40
2d = 37 + -40

Combine like terms: 37 + -40 = -3
2d = -3

Divide each side by '2'.
d = -1.5

Simplifying
d = -1.5

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