10.3+1.8=d

Solution for 10.3+1.8=d equation:

Simplifying
10.3 + 1.8 = d

Combine like terms: 10.3 + 1.8 = 12.1
12.1 = d

Solving
12.1 = 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.
12.1 + -1d = d + -1d

Combine like terms: d + -1d = 0
12.1 + -1d = 0

Add '-12.1' to each side of the equation.
12.1 + -12.1 + -1d = 0 + -12.1

Combine like terms: 12.1 + -12.1 = 0.0
0.0 + -1d = 0 + -12.1
-1d = 0 + -12.1

Combine like terms: 0 + -12.1 = -12.1
-1d = -12.1

Divide each side by '-1'.
d = 12.1

Simplifying
d = 12.1