J+3=2J-1

Solution for J+3=2J-1 equation:

Simplifying
J + 3 = 2J + -1

Reorder the terms:
3 + J = 2J + -1

Reorder the terms:
3 + J = -1 + 2J

Solving
3 + J = -1 + 2J

Solving for variable 'J'.

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

Add '-2J' to each side of the equation.
3 + J + -2J = -1 + 2J + -2J

Combine like terms: J + -2J = -1J
3 + -1J = -1 + 2J + -2J

Combine like terms: 2J + -2J = 0
3 + -1J = -1 + 0
3 + -1J = -1

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

Combine like terms: 3 + -3 = 0
0 + -1J = -1 + -3
-1J = -1 + -3

Combine like terms: -1 + -3 = -4
-1J = -4

Divide each side by '-1'.
J = 4

Simplifying
J = 4