2(r-4)+5(r-2)=

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Solution for 2(r-4)+5(r-2)= equation:


Simplifying
2(r + -4) + 5(r + -2) = 0

Reorder the terms:
2(-4 + r) + 5(r + -2) = 0
(-4 * 2 + r * 2) + 5(r + -2) = 0
(-8 + 2r) + 5(r + -2) = 0

Reorder the terms:
-8 + 2r + 5(-2 + r) = 0
-8 + 2r + (-2 * 5 + r * 5) = 0
-8 + 2r + (-10 + 5r) = 0

Reorder the terms:
-8 + -10 + 2r + 5r = 0

Combine like terms: -8 + -10 = -18
-18 + 2r + 5r = 0

Combine like terms: 2r + 5r = 7r
-18 + 7r = 0

Solving
-18 + 7r = 0

Solving for variable 'r'.

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

Add '18' to each side of the equation.
-18 + 18 + 7r = 0 + 18

Combine like terms: -18 + 18 = 0
0 + 7r = 0 + 18
7r = 0 + 18

Combine like terms: 0 + 18 = 18
7r = 18

Divide each side by '7'.
r = 2.571428571

Simplifying
r = 2.571428571

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