-7(-4+7b)=-217

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Solution for -7(-4+7b)=-217 equation: 


Simplifying
-7(-4 + 7b) = -217
(-4 * -7 + 7b * -7) = -217
(28 + -49b) = -217

Solving
28 + -49b = -217

Solving for variable 'b'.

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

Add '-28' to each side of the equation.
28 + -28 + -49b = -217 + -28

Combine like terms: 28 + -28 = 0
0 + -49b = -217 + -28
-49b = -217 + -28

Combine like terms: -217 + -28 = -245
-49b = -245

Divide each side by '-49'.
b = 5

Simplifying
b = 5

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