-345=3-6(2+8r)

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Solution for -345=3-6(2+8r) equation:


Simplifying
-345 = 3 + -6(2 + 8r)
-345 = 3 + (2 * -6 + 8r * -6)
-345 = 3 + (-12 + -48r)

Combine like terms: 3 + -12 = -9
-345 = -9 + -48r

Solving
-345 = -9 + -48r

Solving for variable 'r'.

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

Add '48r' to each side of the equation.
-345 + 48r = -9 + -48r + 48r

Combine like terms: -48r + 48r = 0
-345 + 48r = -9 + 0
-345 + 48r = -9

Add '345' to each side of the equation.
-345 + 345 + 48r = -9 + 345

Combine like terms: -345 + 345 = 0
0 + 48r = -9 + 345
48r = -9 + 345

Combine like terms: -9 + 345 = 336
48r = 336

Divide each side by '48'.
r = 7

Simplifying
r = 7

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