7(-5r-7)=231

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Solution for 7(-5r-7)=231 equation:


Simplifying
7(-5r + -7) = 231

Reorder the terms:
7(-7 + -5r) = 231
(-7 * 7 + -5r * 7) = 231
(-49 + -35r) = 231

Solving
-49 + -35r = 231

Solving for variable 'r'.

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

Add '49' to each side of the equation.
-49 + 49 + -35r = 231 + 49

Combine like terms: -49 + 49 = 0
0 + -35r = 231 + 49
-35r = 231 + 49

Combine like terms: 231 + 49 = 280
-35r = 280

Divide each side by '-35'.
r = -8

Simplifying
r = -8

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