197=7r-6-7(6r+6)

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Solution for 197=7r-6-7(6r+6) equation:


Simplifying
197 = 7r + -6 + -7(6r + 6)

Reorder the terms:
197 = 7r + -6 + -7(6 + 6r)
197 = 7r + -6 + (6 * -7 + 6r * -7)
197 = 7r + -6 + (-42 + -42r)

Reorder the terms:
197 = -6 + -42 + 7r + -42r

Combine like terms: -6 + -42 = -48
197 = -48 + 7r + -42r

Combine like terms: 7r + -42r = -35r
197 = -48 + -35r

Solving
197 = -48 + -35r

Solving for variable 'r'.

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

Add '35r' to each side of the equation.
197 + 35r = -48 + -35r + 35r

Combine like terms: -35r + 35r = 0
197 + 35r = -48 + 0
197 + 35r = -48

Add '-197' to each side of the equation.
197 + -197 + 35r = -48 + -197

Combine like terms: 197 + -197 = 0
0 + 35r = -48 + -197
35r = -48 + -197

Combine like terms: -48 + -197 = -245
35r = -245

Divide each side by '35'.
r = -7

Simplifying
r = -7

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