2e+f-g=-1
Reorder the polynomial 2e + f − g alphabetically from left to right, starting with the highest order term.
f + 2e − g = −1
Since 2e does not contain the variable to solve for, move it to the right-hand side of the equation by subtracting 2e from both sides.
f − g = −2e − 1
Since -g does not contain the variable to solve for, move it to the right-hand side of the equation by adding g to both sides.
f = −2e + g − 1
f = −2e + g − 1
Move all terms not containing f to the right-hand side of the equation.
f = g − 2e − 1
This what u wanted?