25+6r=7-6(r-1)

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Solution for 25+6r=7-6(r-1) equation: 


Simplifying
25 + 6r = 7 + -6(r + -1)

Reorder the terms:
25 + 6r = 7 + -6(-1 + r)
25 + 6r = 7 + (-1 * -6 + r * -6)
25 + 6r = 7 + (6 + -6r)

Combine like terms: 7 + 6 = 13
25 + 6r = 13 + -6r

Solving
25 + 6r = 13 + -6r

Solving for variable 'r'.

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

Add '6r' to each side of the equation.
25 + 6r + 6r = 13 + -6r + 6r

Combine like terms: 6r + 6r = 12r
25 + 12r = 13 + -6r + 6r

Combine like terms: -6r + 6r = 0
25 + 12r = 13 + 0
25 + 12r = 13

Add '-25' to each side of the equation.
25 + -25 + 12r = 13 + -25

Combine like terms: 25 + -25 = 0
0 + 12r = 13 + -25
12r = 13 + -25

Combine like terms: 13 + -25 = -12
12r = -12

Divide each side by '12'.
r = -1

Simplifying
r = -1

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