3d+21=13d-59

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Solution for 3d+21=13d-59 equation:


Simplifying
3d + 21 = 13d + -59

Reorder the terms:
21 + 3d = 13d + -59

Reorder the terms:
21 + 3d = -59 + 13d

Solving
21 + 3d = -59 + 13d

Solving for variable 'd'.

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

Add '-13d' to each side of the equation.
21 + 3d + -13d = -59 + 13d + -13d

Combine like terms: 3d + -13d = -10d
21 + -10d = -59 + 13d + -13d

Combine like terms: 13d + -13d = 0
21 + -10d = -59 + 0
21 + -10d = -59

Add '-21' to each side of the equation.
21 + -21 + -10d = -59 + -21

Combine like terms: 21 + -21 = 0
0 + -10d = -59 + -21
-10d = -59 + -21

Combine like terms: -59 + -21 = -80
-10d = -80

Divide each side by '-10'.
d = 8

Simplifying
d = 8

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