8+16r-7=9r+57-7r

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Solution for 8+16r-7=9r+57-7r equation:


Simplifying
8 + 16r + -7 = 9r + 57 + -7r

Reorder the terms:
8 + -7 + 16r = 9r + 57 + -7r

Combine like terms: 8 + -7 = 1
1 + 16r = 9r + 57 + -7r

Reorder the terms:
1 + 16r = 57 + 9r + -7r

Combine like terms: 9r + -7r = 2r
1 + 16r = 57 + 2r

Solving
1 + 16r = 57 + 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 + 16r + -2r = 57 + 2r + -2r

Combine like terms: 16r + -2r = 14r
1 + 14r = 57 + 2r + -2r

Combine like terms: 2r + -2r = 0
1 + 14r = 57 + 0
1 + 14r = 57

Add '-1' to each side of the equation.
1 + -1 + 14r = 57 + -1

Combine like terms: 1 + -1 = 0
0 + 14r = 57 + -1
14r = 57 + -1

Combine like terms: 57 + -1 = 56
14r = 56

Divide each side by '14'.
r = 4

Simplifying
r = 4

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