2.1d+7.8=15.15

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Solution for 2.1d+7.8=15.15 equation:


Simplifying
2.1d + 7.8 = 15.15

Reorder the terms:
7.8 + 2.1d = 15.15

Solving
7.8 + 2.1d = 15.15

Solving for variable 'd'.

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

Add '-7.8' to each side of the equation.
7.8 + -7.8 + 2.1d = 15.15 + -7.8

Combine like terms: 7.8 + -7.8 = 0.0
0.0 + 2.1d = 15.15 + -7.8
2.1d = 15.15 + -7.8

Combine like terms: 15.15 + -7.8 = 7.35
2.1d = 7.35

Divide each side by '2.1'.
d = 3.5

Simplifying
d = 3.5

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