7(3-b)=2(9-5b)

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Solution for 7(3-b)=2(9-5b) equation:


Simplifying
7(3 + -1b) = 2(9 + -5b)
(3 * 7 + -1b * 7) = 2(9 + -5b)
(21 + -7b) = 2(9 + -5b)
21 + -7b = (9 * 2 + -5b * 2)
21 + -7b = (18 + -10b)

Solving
21 + -7b = 18 + -10b

Solving for variable 'b'.

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

Add '10b' to each side of the equation.
21 + -7b + 10b = 18 + -10b + 10b

Combine like terms: -7b + 10b = 3b
21 + 3b = 18 + -10b + 10b

Combine like terms: -10b + 10b = 0
21 + 3b = 18 + 0
21 + 3b = 18

Add '-21' to each side of the equation.
21 + -21 + 3b = 18 + -21

Combine like terms: 21 + -21 = 0
0 + 3b = 18 + -21
3b = 18 + -21

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

Divide each side by '3'.
b = -1

Simplifying
b = -1

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