-4(3+8r)=212

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Solution for -4(3+8r)=212 equation: 


Simplifying
-4(3 + 8r) = 212
(3 * -4 + 8r * -4) = 212
(-12 + -32r) = 212

Solving
-12 + -32r = 212

Solving for variable 'r'.

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

Add '12' to each side of the equation.
-12 + 12 + -32r = 212 + 12

Combine like terms: -12 + 12 = 0
0 + -32r = 212 + 12
-32r = 212 + 12

Combine like terms: 212 + 12 = 224
-32r = 224

Divide each side by '-32'.
r = -7

Simplifying
r = -7

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