-7(-7r-7)+4(1-r)=-37

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Solution for -7(-7r-7)+4(1-r)=-37 equation: 


Simplifying
-7(-7r + -7) + 4(1 + -1r) = -37

Reorder the terms:
-7(-7 + -7r) + 4(1 + -1r) = -37
(-7 * -7 + -7r * -7) + 4(1 + -1r) = -37
(49 + 49r) + 4(1 + -1r) = -37
49 + 49r + (1 * 4 + -1r * 4) = -37
49 + 49r + (4 + -4r) = -37

Reorder the terms:
49 + 4 + 49r + -4r = -37

Combine like terms: 49 + 4 = 53
53 + 49r + -4r = -37

Combine like terms: 49r + -4r = 45r
53 + 45r = -37

Solving
53 + 45r = -37

Solving for variable 'r'.

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

Add '-53' to each side of the equation.
53 + -53 + 45r = -37 + -53

Combine like terms: 53 + -53 = 0
0 + 45r = -37 + -53
45r = -37 + -53

Combine like terms: -37 + -53 = -90
45r = -90

Divide each side by '45'.
r = -2

Simplifying
r = -2

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