R=(7r-6r-6)(2r-4)

Solution for R=(7r-6r-6)(2r-4) equation:

Simplifying
R = (7r + -6r + -6)(2r + -4)

Reorder the terms:
R = (-6 + 7r + -6r)(2r + -4)

Combine like terms: 7r + -6r = 1r
R = (-6 + 1r)(2r + -4)

Reorder the terms:
R = (-6 + 1r)(-4 + 2r)

Multiply (-6 + 1r) * (-4 + 2r)
R = (-6(-4 + 2r) + 1r * (-4 + 2r))
R = ((-4 * -6 + 2r * -6) + 1r * (-4 + 2r))
R = ((24 + -12r) + 1r * (-4 + 2r))
R = (24 + -12r + (-4 * 1r + 2r * 1r))
R = (24 + -12r + (-4r + 2r2))

Combine like terms: -12r + -4r = -16r
R = (24 + -16r + 2r2)

Solving
R = 24 + -16r + 2r2

Solving for variable 'R'.

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

Simplifying
R = 24 + -16r + 2r2