(2rs^2t^2-5st^2+4)-(9+6rs^2t^2-3st^2)=

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Solution for (2rs^2t^2-5st^2+4)-(9+6rs^2t^2-3st^2)= equation:


Simplifying
(2rs2t2 + -5st2 + 4) + -1(9 + 6rs2t2 + -3st2) = 0

Reorder the terms:
(4 + 2rs2t2 + -5st2) + -1(9 + 6rs2t2 + -3st2) = 0

Remove parenthesis around (4 + 2rs2t2 + -5st2)
4 + 2rs2t2 + -5st2 + -1(9 + 6rs2t2 + -3st2) = 0
4 + 2rs2t2 + -5st2 + (9 * -1 + 6rs2t2 * -1 + -3st2 * -1) = 0
4 + 2rs2t2 + -5st2 + (-9 + -6rs2t2 + 3st2) = 0

Reorder the terms:
4 + -9 + 2rs2t2 + -6rs2t2 + -5st2 + 3st2 = 0

Combine like terms: 4 + -9 = -5
-5 + 2rs2t2 + -6rs2t2 + -5st2 + 3st2 = 0

Combine like terms: 2rs2t2 + -6rs2t2 = -4rs2t2
-5 + -4rs2t2 + -5st2 + 3st2 = 0

Combine like terms: -5st2 + 3st2 = -2st2
-5 + -4rs2t2 + -2st2 = 0

Solving
-5 + -4rs2t2 + -2st2 = 0

Solving for variable 'r'.

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

Add '5' to each side of the equation.
-5 + -4rs2t2 + 5 + -2st2 = 0 + 5

Reorder the terms:
-5 + 5 + -4rs2t2 + -2st2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -4rs2t2 + -2st2 = 0 + 5
-4rs2t2 + -2st2 = 0 + 5

Combine like terms: 0 + 5 = 5
-4rs2t2 + -2st2 = 5

Add '2st2' to each side of the equation.
-4rs2t2 + -2st2 + 2st2 = 5 + 2st2

Combine like terms: -2st2 + 2st2 = 0
-4rs2t2 + 0 = 5 + 2st2
-4rs2t2 = 5 + 2st2

Divide each side by '-4s2t2'.
r = -1.25s-2t-2 + -0.5s-1

Simplifying
r = -1.25s-2t-2 + -0.5s-1

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