R+s^2-t-(r-s^2+t)=

Solution for R+s^2-t-(r-s^2+t)= equation:

Simplifying
R + s2 + -1t + -1(r + -1s2 + t) = 0
R + s2 + -1t + (r * -1 + -1s2 * -1 + t * -1) = 0
R + s2 + -1t + (-1r + 1s2 + -1t) = 0

Reorder the terms:
R + -1r + s2 + 1s2 + -1t + -1t = 0

Combine like terms: s2 + 1s2 = 2s2
R + -1r + 2s2 + -1t + -1t = 0

Combine like terms: -1t + -1t = -2t
R + -1r + 2s2 + -2t = 0

Solving
R + -1r + 2s2 + -2t = 0

Solving for variable 'R'.

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

Add 'r' to each side of the equation.
R + -1r + 2s2 + r + -2t = 0 + r

Reorder the terms:
R + -1r + r + 2s2 + -2t = 0 + r

Combine like terms: -1r + r = 0
R + 0 + 2s2 + -2t = 0 + r
R + 2s2 + -2t = 0 + r
Remove the zero:
R + 2s2 + -2t = r

Add '-2s2' to each side of the equation.
R + 2s2 + -2s2 + -2t = r + -2s2

Combine like terms: 2s2 + -2s2 = 0
R + 0 + -2t = r + -2s2
R + -2t = r + -2s2

Add '2t' to each side of the equation.
R + -2t + 2t = r + -2s2 + 2t

Combine like terms: -2t + 2t = 0
R + 0 = r + -2s2 + 2t
R = r + -2s2 + 2t

Simplifying
R = r + -2s2 + 2t