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

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


Simplifying
7b + -4(3b + 7) = 7 + -1(8 + 8b)

Reorder the terms:
7b + -4(7 + 3b) = 7 + -1(8 + 8b)
7b + (7 * -4 + 3b * -4) = 7 + -1(8 + 8b)
7b + (-28 + -12b) = 7 + -1(8 + 8b)

Reorder the terms:
-28 + 7b + -12b = 7 + -1(8 + 8b)

Combine like terms: 7b + -12b = -5b
-28 + -5b = 7 + -1(8 + 8b)
-28 + -5b = 7 + (8 * -1 + 8b * -1)
-28 + -5b = 7 + (-8 + -8b)

Combine like terms: 7 + -8 = -1
-28 + -5b = -1 + -8b

Solving
-28 + -5b = -1 + -8b

Solving for variable 'b'.

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

Add '8b' to each side of the equation.
-28 + -5b + 8b = -1 + -8b + 8b

Combine like terms: -5b + 8b = 3b
-28 + 3b = -1 + -8b + 8b

Combine like terms: -8b + 8b = 0
-28 + 3b = -1 + 0
-28 + 3b = -1

Add '28' to each side of the equation.
-28 + 28 + 3b = -1 + 28

Combine like terms: -28 + 28 = 0
0 + 3b = -1 + 28
3b = -1 + 28

Combine like terms: -1 + 28 = 27
3b = 27

Divide each side by '3'.
b = 9

Simplifying
b = 9

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