-3(r-7)=37-r

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Solution for -3(r-7)=37-r equation:


Simplifying
-3(r + -7) = 37 + -1r

Reorder the terms:
-3(-7 + r) = 37 + -1r
(-7 * -3 + r * -3) = 37 + -1r
(21 + -3r) = 37 + -1r

Solving
21 + -3r = 37 + -1r

Solving for variable 'r'.

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

Add 'r' to each side of the equation.
21 + -3r + r = 37 + -1r + r

Combine like terms: -3r + r = -2r
21 + -2r = 37 + -1r + r

Combine like terms: -1r + r = 0
21 + -2r = 37 + 0
21 + -2r = 37

Add '-21' to each side of the equation.
21 + -21 + -2r = 37 + -21

Combine like terms: 21 + -21 = 0
0 + -2r = 37 + -21
-2r = 37 + -21

Combine like terms: 37 + -21 = 16
-2r = 16

Divide each side by '-2'.
r = -8

Simplifying
r = -8

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