89=5+4(1+4b)

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Solution for 89=5+4(1+4b) equation:


Simplifying
89 = 5 + 4(1 + 4b)
89 = 5 + (1 * 4 + 4b * 4)
89 = 5 + (4 + 16b)

Combine like terms: 5 + 4 = 9
89 = 9 + 16b

Solving
89 = 9 + 16b

Solving for variable 'b'.

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

Add '-16b' to each side of the equation.
89 + -16b = 9 + 16b + -16b

Combine like terms: 16b + -16b = 0
89 + -16b = 9 + 0
89 + -16b = 9

Add '-89' to each side of the equation.
89 + -89 + -16b = 9 + -89

Combine like terms: 89 + -89 = 0
0 + -16b = 9 + -89
-16b = 9 + -89

Combine like terms: 9 + -89 = -80
-16b = -80

Divide each side by '-16'.
b = 5

Simplifying
b = 5

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