-66=-2(1+5r)-4

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Solution for -66=-2(1+5r)-4 equation:


Simplifying
-66 = -2(1 + 5r) + -4
-66 = (1 * -2 + 5r * -2) + -4
-66 = (-2 + -10r) + -4

Reorder the terms:
-66 = -2 + -4 + -10r

Combine like terms: -2 + -4 = -6
-66 = -6 + -10r

Solving
-66 = -6 + -10r

Solving for variable 'r'.

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

Add '10r' to each side of the equation.
-66 + 10r = -6 + -10r + 10r

Combine like terms: -10r + 10r = 0
-66 + 10r = -6 + 0
-66 + 10r = -6

Add '66' to each side of the equation.
-66 + 66 + 10r = -6 + 66

Combine like terms: -66 + 66 = 0
0 + 10r = -6 + 66
10r = -6 + 66

Combine like terms: -6 + 66 = 60
10r = 60

Divide each side by '10'.
r = 6

Simplifying
r = 6

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