238=7(7b-1)

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Solution for 238=7(7b-1) equation:


Simplifying
238 = 7(7b + -1)

Reorder the terms:
238 = 7(-1 + 7b)
238 = (-1 * 7 + 7b * 7)
238 = (-7 + 49b)

Solving
238 = -7 + 49b

Solving for variable 'b'.

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

Add '-49b' to each side of the equation.
238 + -49b = -7 + 49b + -49b

Combine like terms: 49b + -49b = 0
238 + -49b = -7 + 0
238 + -49b = -7

Add '-238' to each side of the equation.
238 + -238 + -49b = -7 + -238

Combine like terms: 238 + -238 = 0
0 + -49b = -7 + -238
-49b = -7 + -238

Combine like terms: -7 + -238 = -245
-49b = -245

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

Simplifying
b = 5

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