7(3-R)+R=5-2R

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Solution for 7(3-R)+R=5-2R equation: 


Simplifying
7(3 + -1R) + R = 5 + -2R
(3 * 7 + -1R * 7) + R = 5 + -2R
(21 + -7R) + R = 5 + -2R

Combine like terms: -7R + R = -6R
21 + -6R = 5 + -2R

Solving
21 + -6R = 5 + -2R

Solving for variable 'R'.

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

Add '2R' to each side of the equation.
21 + -6R + 2R = 5 + -2R + 2R

Combine like terms: -6R + 2R = -4R
21 + -4R = 5 + -2R + 2R

Combine like terms: -2R + 2R = 0
21 + -4R = 5 + 0
21 + -4R = 5

Add '-21' to each side of the equation.
21 + -21 + -4R = 5 + -21

Combine like terms: 21 + -21 = 0
0 + -4R = 5 + -21
-4R = 5 + -21

Combine like terms: 5 + -21 = -16
-4R = -16

Divide each side by '-4'.
R = 4

Simplifying
R = 4

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