-4(4-6r)+5(-4r-5)=-25

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Solution for -4(4-6r)+5(-4r-5)=-25 equation:


Simplifying
-4(4 + -6r) + 5(-4r + -5) = -25
(4 * -4 + -6r * -4) + 5(-4r + -5) = -25
(-16 + 24r) + 5(-4r + -5) = -25

Reorder the terms:
-16 + 24r + 5(-5 + -4r) = -25
-16 + 24r + (-5 * 5 + -4r * 5) = -25
-16 + 24r + (-25 + -20r) = -25

Reorder the terms:
-16 + -25 + 24r + -20r = -25

Combine like terms: -16 + -25 = -41
-41 + 24r + -20r = -25

Combine like terms: 24r + -20r = 4r
-41 + 4r = -25

Solving
-41 + 4r = -25

Solving for variable 'r'.

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

Add '41' to each side of the equation.
-41 + 41 + 4r = -25 + 41

Combine like terms: -41 + 41 = 0
0 + 4r = -25 + 41
4r = -25 + 41

Combine like terms: -25 + 41 = 16
4r = 16

Divide each side by '4'.
r = 4

Simplifying
r = 4

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