-4b-4(-5+8)=172

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Solution for -4b-4(-5+8)=172 equation:


Simplifying
-4b + -4(-5 + 8) = 172

Combine like terms: -5 + 8 = 3
-4b + -4(3) = 172

Multiply -4 * 3
-4b + -12 = 172

Reorder the terms:
-12 + -4b = 172

Solving
-12 + -4b = 172

Solving for variable 'b'.

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

Add '12' to each side of the equation.
-12 + 12 + -4b = 172 + 12

Combine like terms: -12 + 12 = 0
0 + -4b = 172 + 12
-4b = 172 + 12

Combine like terms: 172 + 12 = 184
-4b = 184

Divide each side by '-4'.
b = -46

Simplifying
b = -46

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