8(-8r-1)-(2r-8)=-66

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Solution for 8(-8r-1)-(2r-8)=-66 equation:


Simplifying
8(-8r + -1) + -1(2r + -8) = -66

Reorder the terms:
8(-1 + -8r) + -1(2r + -8) = -66
(-1 * 8 + -8r * 8) + -1(2r + -8) = -66
(-8 + -64r) + -1(2r + -8) = -66

Reorder the terms:
-8 + -64r + -1(-8 + 2r) = -66
-8 + -64r + (-8 * -1 + 2r * -1) = -66
-8 + -64r + (8 + -2r) = -66

Reorder the terms:
-8 + 8 + -64r + -2r = -66

Combine like terms: -8 + 8 = 0
0 + -64r + -2r = -66
-64r + -2r = -66

Combine like terms: -64r + -2r = -66r
-66r = -66

Solving
-66r = -66

Solving for variable 'r'.

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

Divide each side by '-66'.
r = 1

Simplifying
r = 1

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