R+4=20-4*4

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Solution for R+4=20-4*4 equation: 


Simplifying
R + 4 = 20 + -4 * 4

Reorder the terms:
4 + R = 20 + -4 * 4

Multiply -4 * 4
4 + R = 20 + -16

Combine like terms: 20 + -16 = 4
4 + R = 4

Add '-4' to each side of the equation.
4 + -4 + R = 4 + -4

Combine like terms: 4 + -4 = 0
0 + R = 4 + -4
R = 4 + -4

Combine like terms: 4 + -4 = 0
R = 0

Solving
R = 0

Solving for variable 'R'.

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

Simplifying
R = 0

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