7r+16=9r-8+4r

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Solution for 7r+16=9r-8+4r equation:


Simplifying
7r + 16 = 9r + -8 + 4r

Reorder the terms:
16 + 7r = 9r + -8 + 4r

Reorder the terms:
16 + 7r = -8 + 9r + 4r

Combine like terms: 9r + 4r = 13r
16 + 7r = -8 + 13r

Solving
16 + 7r = -8 + 13r

Solving for variable 'r'.

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

Add '-13r' to each side of the equation.
16 + 7r + -13r = -8 + 13r + -13r

Combine like terms: 7r + -13r = -6r
16 + -6r = -8 + 13r + -13r

Combine like terms: 13r + -13r = 0
16 + -6r = -8 + 0
16 + -6r = -8

Add '-16' to each side of the equation.
16 + -16 + -6r = -8 + -16

Combine like terms: 16 + -16 = 0
0 + -6r = -8 + -16
-6r = -8 + -16

Combine like terms: -8 + -16 = -24
-6r = -24

Divide each side by '-6'.
r = 4

Simplifying
r = 4

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