18=10b-4(b+7)

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Solution for 18=10b-4(b+7) equation:


Simplifying
18 = 10b + -4(b + 7)

Reorder the terms:
18 = 10b + -4(7 + b)
18 = 10b + (7 * -4 + b * -4)
18 = 10b + (-28 + -4b)

Reorder the terms:
18 = -28 + 10b + -4b

Combine like terms: 10b + -4b = 6b
18 = -28 + 6b

Solving
18 = -28 + 6b

Solving for variable 'b'.

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

Add '-6b' to each side of the equation.
18 + -6b = -28 + 6b + -6b

Combine like terms: 6b + -6b = 0
18 + -6b = -28 + 0
18 + -6b = -28

Add '-18' to each side of the equation.
18 + -18 + -6b = -28 + -18

Combine like terms: 18 + -18 = 0
0 + -6b = -28 + -18
-6b = -28 + -18

Combine like terms: -28 + -18 = -46
-6b = -46

Divide each side by '-6'.
b = 7.666666667

Simplifying
b = 7.666666667

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