b=4(1-7y)+(4y-5)(y-1)

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Solution for b=4(1-7y)+(4y-5)(y-1) equation: 


Simplifying
b = 4(1 + -7y) + (4y + -5)(y + -1)
b = (1 * 4 + -7y * 4) + (4y + -5)(y + -1)
b = (4 + -28y) + (4y + -5)(y + -1)

Reorder the terms:
b = 4 + -28y + (-5 + 4y)(y + -1)

Reorder the terms:
b = 4 + -28y + (-5 + 4y)(-1 + y)

Multiply (-5 + 4y) * (-1 + y)
b = 4 + -28y + (-5(-1 + y) + 4y * (-1 + y))
b = 4 + -28y + ((-1 * -5 + y * -5) + 4y * (-1 + y))
b = 4 + -28y + ((5 + -5y) + 4y * (-1 + y))
b = 4 + -28y + (5 + -5y + (-1 * 4y + y * 4y))
b = 4 + -28y + (5 + -5y + (-4y + 4y2))

Combine like terms: -5y + -4y = -9y
b = 4 + -28y + (5 + -9y + 4y2)

Reorder the terms:
b = 4 + 5 + -28y + -9y + 4y2

Combine like terms: 4 + 5 = 9
b = 9 + -28y + -9y + 4y2

Combine like terms: -28y + -9y = -37y
b = 9 + -37y + 4y2

Solving
b = 9 + -37y + 4y2

Solving for variable 'b'.

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

Simplifying
b = 9 + -37y + 4y2

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