3b+(-5b-7)=0

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Solution for 3b+(-5b-7)=0 equation:


Simplifying
3b + (-5b + -7) = 0

Reorder the terms:
3b + (-7 + -5b) = 0

Remove parenthesis around (-7 + -5b)
3b + -7 + -5b = 0

Reorder the terms:
-7 + 3b + -5b = 0

Combine like terms: 3b + -5b = -2b
-7 + -2b = 0

Solving
-7 + -2b = 0

Solving for variable 'b'.

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

Add '7' to each side of the equation.
-7 + 7 + -2b = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -2b = 0 + 7
-2b = 0 + 7

Combine like terms: 0 + 7 = 7
-2b = 7

Divide each side by '-2'.
b = -3.5

Simplifying
b = -3.5

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