8+3r=r+4

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Solution for 8+3r=r+4 equation:


Simplifying
8 + 3r = r + 4

Reorder the terms:
8 + 3r = 4 + r

Solving
8 + 3r = 4 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
8 + 3r + -1r = 4 + r + -1r

Combine like terms: 3r + -1r = 2r
8 + 2r = 4 + r + -1r

Combine like terms: r + -1r = 0
8 + 2r = 4 + 0
8 + 2r = 4

Add '-8' to each side of the equation.
8 + -8 + 2r = 4 + -8

Combine like terms: 8 + -8 = 0
0 + 2r = 4 + -8
2r = 4 + -8

Combine like terms: 4 + -8 = -4
2r = -4

Divide each side by '2'.
r = -2

Simplifying
r = -2

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