7(b+3)-18(1-b)=103

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Solution for 7(b+3)-18(1-b)=103 equation:


Simplifying
7(b + 3) + -18(1 + -1b) = 103

Reorder the terms:
7(3 + b) + -18(1 + -1b) = 103
(3 * 7 + b * 7) + -18(1 + -1b) = 103
(21 + 7b) + -18(1 + -1b) = 103
21 + 7b + (1 * -18 + -1b * -18) = 103
21 + 7b + (-18 + 18b) = 103

Reorder the terms:
21 + -18 + 7b + 18b = 103

Combine like terms: 21 + -18 = 3
3 + 7b + 18b = 103

Combine like terms: 7b + 18b = 25b
3 + 25b = 103

Solving
3 + 25b = 103

Solving for variable 'b'.

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

Add '-3' to each side of the equation.
3 + -3 + 25b = 103 + -3

Combine like terms: 3 + -3 = 0
0 + 25b = 103 + -3
25b = 103 + -3

Combine like terms: 103 + -3 = 100
25b = 100

Divide each side by '25'.
b = 4

Simplifying
b = 4

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