10r+-10(-4r+-2)=

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Solution for 10r+-10(-4r+-2)= equation:


Simplifying
10r + -10(-4r + -2) = 0

Reorder the terms:
10r + -10(-2 + -4r) = 0
10r + (-2 * -10 + -4r * -10) = 0
10r + (20 + 40r) = 0

Reorder the terms:
20 + 10r + 40r = 0

Combine like terms: 10r + 40r = 50r
20 + 50r = 0

Solving
20 + 50r = 0

Solving for variable 'r'.

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

Add '-20' to each side of the equation.
20 + -20 + 50r = 0 + -20

Combine like terms: 20 + -20 = 0
0 + 50r = 0 + -20
50r = 0 + -20

Combine like terms: 0 + -20 = -20
50r = -20

Divide each side by '50'.
r = -0.4

Simplifying
r = -0.4

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