-105=-7(1-2r)

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Solution for -105=-7(1-2r) equation:


Simplifying
-105 = -7(1 + -2r)
-105 = (1 * -7 + -2r * -7)
-105 = (-7 + 14r)

Solving
-105 = -7 + 14r

Solving for variable 'r'.

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

Add '-14r' to each side of the equation.
-105 + -14r = -7 + 14r + -14r

Combine like terms: 14r + -14r = 0
-105 + -14r = -7 + 0
-105 + -14r = -7

Add '105' to each side of the equation.
-105 + 105 + -14r = -7 + 105

Combine like terms: -105 + 105 = 0
0 + -14r = -7 + 105
-14r = -7 + 105

Combine like terms: -7 + 105 = 98
-14r = 98

Divide each side by '-14'.
r = -7

Simplifying
r = -7

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