77=-7(4b+2)+7(-5b-5)

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Solution for 77=-7(4b+2)+7(-5b-5) equation:


Simplifying
77 = -7(4b + 2) + 7(-5b + -5)

Reorder the terms:
77 = -7(2 + 4b) + 7(-5b + -5)
77 = (2 * -7 + 4b * -7) + 7(-5b + -5)
77 = (-14 + -28b) + 7(-5b + -5)

Reorder the terms:
77 = -14 + -28b + 7(-5 + -5b)
77 = -14 + -28b + (-5 * 7 + -5b * 7)
77 = -14 + -28b + (-35 + -35b)

Reorder the terms:
77 = -14 + -35 + -28b + -35b

Combine like terms: -14 + -35 = -49
77 = -49 + -28b + -35b

Combine like terms: -28b + -35b = -63b
77 = -49 + -63b

Solving
77 = -49 + -63b

Solving for variable 'b'.

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

Add '63b' to each side of the equation.
77 + 63b = -49 + -63b + 63b

Combine like terms: -63b + 63b = 0
77 + 63b = -49 + 0
77 + 63b = -49

Add '-77' to each side of the equation.
77 + -77 + 63b = -49 + -77

Combine like terms: 77 + -77 = 0
0 + 63b = -49 + -77
63b = -49 + -77

Combine like terms: -49 + -77 = -126
63b = -126

Divide each side by '63'.
b = -2

Simplifying
b = -2

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