12540=12000+(1)(R)(.5)

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Solution for 12540=12000+(1)(R)(.5) equation: 


Simplifying
12540 = 12000 + (1)(R)(0.5)

Reorder the terms for easier multiplication:
12540 = 12000 + 1 * 0.5R

Multiply 1 * 0.5
12540 = 12000 + 0.5R

Solving
12540 = 12000 + 0.5R

Solving for variable 'R'.

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

Add '-0.5R' to each side of the equation.
12540 + -0.5R = 12000 + 0.5R + -0.5R

Combine like terms: 0.5R + -0.5R = 0.0
12540 + -0.5R = 12000 + 0.0
12540 + -0.5R = 12000

Add '-12540' to each side of the equation.
12540 + -12540 + -0.5R = 12000 + -12540

Combine like terms: 12540 + -12540 = 0
0 + -0.5R = 12000 + -12540
-0.5R = 12000 + -12540

Combine like terms: 12000 + -12540 = -540
-0.5R = -540

Divide each side by '-0.5'.
R = 1080

Simplifying
R = 1080

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