2.1=.2t

Solution for 2.1=.2t equation:

Simplifying
2.1 = 0.2t

Solving
2.1 = 0.2t

Solving for variable 't'.

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

Add '-0.2t' to each side of the equation.
2.1 + -0.2t = 0.2t + -0.2t

Combine like terms: 0.2t + -0.2t = 0.0
2.1 + -0.2t = 0.0

Add '-2.1' to each side of the equation.
2.1 + -2.1 + -0.2t = 0.0 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + -0.2t = 0.0 + -2.1
-0.2t = 0.0 + -2.1

Combine like terms: 0.0 + -2.1 = -2.1
-0.2t = -2.1

Divide each side by '-0.2'.
t = 10.5

Simplifying
t = 10.5