4+15r-3=9r+27-7r

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Solution for 4+15r-3=9r+27-7r equation:


Simplifying
4 + 15r + -3 = 9r + 27 + -7r

Reorder the terms:
4 + -3 + 15r = 9r + 27 + -7r

Combine like terms: 4 + -3 = 1
1 + 15r = 9r + 27 + -7r

Reorder the terms:
1 + 15r = 27 + 9r + -7r

Combine like terms: 9r + -7r = 2r
1 + 15r = 27 + 2r

Solving
1 + 15r = 27 + 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.
1 + 15r + -2r = 27 + 2r + -2r

Combine like terms: 15r + -2r = 13r
1 + 13r = 27 + 2r + -2r

Combine like terms: 2r + -2r = 0
1 + 13r = 27 + 0
1 + 13r = 27

Add '-1' to each side of the equation.
1 + -1 + 13r = 27 + -1

Combine like terms: 1 + -1 = 0
0 + 13r = 27 + -1
13r = 27 + -1

Combine like terms: 27 + -1 = 26
13r = 26

Divide each side by '13'.
r = 2

Simplifying
r = 2

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