4.89=0.1+d+0.1

Solution for 4.89=0.1+d+0.1 equation:

Simplifying
4.89 = 0.1 + d + 0.1

Reorder the terms:
4.89 = 0.1 + 0.1 + d

Combine like terms: 0.1 + 0.1 = 0.2
4.89 = 0.2 + d

Solving
4.89 = 0.2 + 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.
4.89 + -1d = 0.2 + d + -1d

Combine like terms: d + -1d = 0
4.89 + -1d = 0.2 + 0
4.89 + -1d = 0.2

Add '-4.89' to each side of the equation.
4.89 + -4.89 + -1d = 0.2 + -4.89

Combine like terms: 4.89 + -4.89 = 0.00
0.00 + -1d = 0.2 + -4.89
-1d = 0.2 + -4.89

Combine like terms: 0.2 + -4.89 = -4.69
-1d = -4.69

Divide each side by '-1'.
d = 4.69

Simplifying
d = 4.69