3=g-1.2

Solution for 3=g-1.2 equation:

Simplifying
3 = g + -1.2

Reorder the terms:
3 = -1.2 + g

Solving
3 = -1.2 + g

Solving for variable 'g'.

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

Add '-1g' to each side of the equation.
3 + -1g = -1.2 + g + -1g

Combine like terms: g + -1g = 0
3 + -1g = -1.2 + 0
3 + -1g = -1.2

Add '-3' to each side of the equation.
3 + -3 + -1g = -1.2 + -3

Combine like terms: 3 + -3 = 0
0 + -1g = -1.2 + -3
-1g = -1.2 + -3

Combine like terms: -1.2 + -3 = -4.2
-1g = -4.2

Divide each side by '-1'.
g = 4.2

Simplifying
g = 4.2