6b+-4(2b+8)=21

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Solution for 6b+-4(2b+8)=21 equation:


Simplifying
6b + -4(2b + 8) = 21

Reorder the terms:
6b + -4(8 + 2b) = 21
6b + (8 * -4 + 2b * -4) = 21
6b + (-32 + -8b) = 21

Reorder the terms:
-32 + 6b + -8b = 21

Combine like terms: 6b + -8b = -2b
-32 + -2b = 21

Solving
-32 + -2b = 21

Solving for variable 'b'.

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

Add '32' to each side of the equation.
-32 + 32 + -2b = 21 + 32

Combine like terms: -32 + 32 = 0
0 + -2b = 21 + 32
-2b = 21 + 32

Combine like terms: 21 + 32 = 53
-2b = 53

Divide each side by '-2'.
b = -26.5

Simplifying
b = -26.5

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