-3-9(-r+7)=

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Solution for -3-9(-r+7)= equation:


Simplifying
-3 + -9(-1r + 7) = 0

Reorder the terms:
-3 + -9(7 + -1r) = 0
-3 + (7 * -9 + -1r * -9) = 0
-3 + (-63 + 9r) = 0

Combine like terms: -3 + -63 = -66
-66 + 9r = 0

Solving
-66 + 9r = 0

Solving for variable 'r'.

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

Add '66' to each side of the equation.
-66 + 66 + 9r = 0 + 66

Combine like terms: -66 + 66 = 0
0 + 9r = 0 + 66
9r = 0 + 66

Combine like terms: 0 + 66 = 66
9r = 66

Divide each side by '9'.
r = 7.333333333

Simplifying
r = 7.333333333

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