-7(3-b)=-25+5b

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Solution for -7(3-b)=-25+5b equation:


Simplifying
-7(3 + -1b) = -25 + 5b
(3 * -7 + -1b * -7) = -25 + 5b
(-21 + 7b) = -25 + 5b

Solving
-21 + 7b = -25 + 5b

Solving for variable 'b'.

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

Add '-5b' to each side of the equation.
-21 + 7b + -5b = -25 + 5b + -5b

Combine like terms: 7b + -5b = 2b
-21 + 2b = -25 + 5b + -5b

Combine like terms: 5b + -5b = 0
-21 + 2b = -25 + 0
-21 + 2b = -25

Add '21' to each side of the equation.
-21 + 21 + 2b = -25 + 21

Combine like terms: -21 + 21 = 0
0 + 2b = -25 + 21
2b = -25 + 21

Combine like terms: -25 + 21 = -4
2b = -4

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

Simplifying
b = -2

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