4.6d-8+1.2d=21

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Solution for 4.6d-8+1.2d=21 equation:


Simplifying
4.6d + -8 + 1.2d = 21

Reorder the terms:
-8 + 4.6d + 1.2d = 21

Combine like terms: 4.6d + 1.2d = 5.8d
-8 + 5.8d = 21

Solving
-8 + 5.8d = 21

Solving for variable 'd'.

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

Add '8' to each side of the equation.
-8 + 8 + 5.8d = 21 + 8

Combine like terms: -8 + 8 = 0
0 + 5.8d = 21 + 8
5.8d = 21 + 8

Combine like terms: 21 + 8 = 29
5.8d = 29

Divide each side by '5.8'.
d = 5

Simplifying
d = 5

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