-172=4(-3-7b)+8

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Solution for -172=4(-3-7b)+8 equation:


Simplifying
-172 = 4(-3 + -7b) + 8
-172 = (-3 * 4 + -7b * 4) + 8
-172 = (-12 + -28b) + 8

Reorder the terms:
-172 = -12 + 8 + -28b

Combine like terms: -12 + 8 = -4
-172 = -4 + -28b

Solving
-172 = -4 + -28b

Solving for variable 'b'.

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

Add '28b' to each side of the equation.
-172 + 28b = -4 + -28b + 28b

Combine like terms: -28b + 28b = 0
-172 + 28b = -4 + 0
-172 + 28b = -4

Add '172' to each side of the equation.
-172 + 172 + 28b = -4 + 172

Combine like terms: -172 + 172 = 0
0 + 28b = -4 + 172
28b = -4 + 172

Combine like terms: -4 + 172 = 168
28b = 168

Divide each side by '28'.
b = 6

Simplifying
b = 6

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