126=-9(4+r)

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Solution for 126=-9(4+r) equation:


Simplifying
126 = -9(4 + r)
126 = (4 * -9 + r * -9)
126 = (-36 + -9r)

Solving
126 = -36 + -9r

Solving for variable 'r'.

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

Add '9r' to each side of the equation.
126 + 9r = -36 + -9r + 9r

Combine like terms: -9r + 9r = 0
126 + 9r = -36 + 0
126 + 9r = -36

Add '-126' to each side of the equation.
126 + -126 + 9r = -36 + -126

Combine like terms: 126 + -126 = 0
0 + 9r = -36 + -126
9r = -36 + -126

Combine like terms: -36 + -126 = -162
9r = -162

Divide each side by '9'.
r = -18

Simplifying
r = -18

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