37-d=40+d

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Solution for 37-d=40+d equation:


Simplifying
37 + -1d = 40 + d

Solving
37 + -1d = 40 + d

Solving for variable 'd'.

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

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

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

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

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

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

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

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

Simplifying
d = -1.5

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