(2r-13)-(6r-4)=

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Solution for (2r-13)-(6r-4)= equation:


Simplifying
(2r + -13) + -1(6r + -4) = 0

Reorder the terms:
(-13 + 2r) + -1(6r + -4) = 0

Remove parenthesis around (-13 + 2r)
-13 + 2r + -1(6r + -4) = 0

Reorder the terms:
-13 + 2r + -1(-4 + 6r) = 0
-13 + 2r + (-4 * -1 + 6r * -1) = 0
-13 + 2r + (4 + -6r) = 0

Reorder the terms:
-13 + 4 + 2r + -6r = 0

Combine like terms: -13 + 4 = -9
-9 + 2r + -6r = 0

Combine like terms: 2r + -6r = -4r
-9 + -4r = 0

Solving
-9 + -4r = 0

Solving for variable 'r'.

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

Add '9' to each side of the equation.
-9 + 9 + -4r = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -4r = 0 + 9
-4r = 0 + 9

Combine like terms: 0 + 9 = 9
-4r = 9

Divide each side by '-4'.
r = -2.25

Simplifying
r = -2.25

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