7(-2r-7)=-5r-31

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Solution for 7(-2r-7)=-5r-31 equation:


Simplifying
7(-2r + -7) = -5r + -31

Reorder the terms:
7(-7 + -2r) = -5r + -31
(-7 * 7 + -2r * 7) = -5r + -31
(-49 + -14r) = -5r + -31

Reorder the terms:
-49 + -14r = -31 + -5r

Solving
-49 + -14r = -31 + -5r

Solving for variable 'r'.

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

Add '5r' to each side of the equation.
-49 + -14r + 5r = -31 + -5r + 5r

Combine like terms: -14r + 5r = -9r
-49 + -9r = -31 + -5r + 5r

Combine like terms: -5r + 5r = 0
-49 + -9r = -31 + 0
-49 + -9r = -31

Add '49' to each side of the equation.
-49 + 49 + -9r = -31 + 49

Combine like terms: -49 + 49 = 0
0 + -9r = -31 + 49
-9r = -31 + 49

Combine like terms: -31 + 49 = 18
-9r = 18

Divide each side by '-9'.
r = -2

Simplifying
r = -2

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