7(2b-3)+2=5*15+(b-3)

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Solution for 7(2b-3)+2=5*15+(b-3) equation:


Simplifying
7(2b + -3) + 2 = 5 * 15 + (b + -3)

Reorder the terms:
7(-3 + 2b) + 2 = 5 * 15 + (b + -3)
(-3 * 7 + 2b * 7) + 2 = 5 * 15 + (b + -3)
(-21 + 14b) + 2 = 5 * 15 + (b + -3)

Reorder the terms:
-21 + 2 + 14b = 5 * 15 + (b + -3)

Combine like terms: -21 + 2 = -19
-19 + 14b = 5 * 15 + (b + -3)

Multiply 5 * 15
-19 + 14b = 75 + (b + -3)

Reorder the terms:
-19 + 14b = 75 + (-3 + b)

Remove parenthesis around (-3 + b)
-19 + 14b = 75 + -3 + b

Combine like terms: 75 + -3 = 72
-19 + 14b = 72 + b

Solving
-19 + 14b = 72 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
-19 + 14b + -1b = 72 + b + -1b

Combine like terms: 14b + -1b = 13b
-19 + 13b = 72 + b + -1b

Combine like terms: b + -1b = 0
-19 + 13b = 72 + 0
-19 + 13b = 72

Add '19' to each side of the equation.
-19 + 19 + 13b = 72 + 19

Combine like terms: -19 + 19 = 0
0 + 13b = 72 + 19
13b = 72 + 19

Combine like terms: 72 + 19 = 91
13b = 91

Divide each side by '13'.
b = 7

Simplifying
b = 7

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