-5R+(81-9)+13=7R+5R

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Solution for -5R+(81-9)+13=7R+5R equation:


Simplifying
-5R + (81 + -9) + 13 = 7R + 5R

Combine like terms: 81 + -9 = 72
-5R + (72) + 13 = 7R + 5R
-5R + 72 + 13 = 7R + 5R

Reorder the terms:
72 + 13 + -5R = 7R + 5R

Combine like terms: 72 + 13 = 85
85 + -5R = 7R + 5R

Combine like terms: 7R + 5R = 12R
85 + -5R = 12R

Solving
85 + -5R = 12R

Solving for variable 'R'.

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

Add '-12R' to each side of the equation.
85 + -5R + -12R = 12R + -12R

Combine like terms: -5R + -12R = -17R
85 + -17R = 12R + -12R

Combine like terms: 12R + -12R = 0
85 + -17R = 0

Add '-85' to each side of the equation.
85 + -85 + -17R = 0 + -85

Combine like terms: 85 + -85 = 0
0 + -17R = 0 + -85
-17R = 0 + -85

Combine like terms: 0 + -85 = -85
-17R = -85

Divide each side by '-17'.
R = 5

Simplifying
R = 5

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