(15b-4)-7(2b+3)=-4

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Solution for (15b-4)-7(2b+3)=-4 equation:


Simplifying
(15b + -4) + -7(2b + 3) = -4

Reorder the terms:
(-4 + 15b) + -7(2b + 3) = -4

Remove parenthesis around (-4 + 15b)
-4 + 15b + -7(2b + 3) = -4

Reorder the terms:
-4 + 15b + -7(3 + 2b) = -4
-4 + 15b + (3 * -7 + 2b * -7) = -4
-4 + 15b + (-21 + -14b) = -4

Reorder the terms:
-4 + -21 + 15b + -14b = -4

Combine like terms: -4 + -21 = -25
-25 + 15b + -14b = -4

Combine like terms: 15b + -14b = 1b
-25 + 1b = -4

Solving
-25 + 1b = -4

Solving for variable 'b'.

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

Add '25' to each side of the equation.
-25 + 25 + 1b = -4 + 25

Combine like terms: -25 + 25 = 0
0 + 1b = -4 + 25
1b = -4 + 25

Combine like terms: -4 + 25 = 21
1b = 21

Divide each side by '1'.
b = 21

Simplifying
b = 21

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