3(7+b)=60

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Solution for 3(7+b)=60 equation: 


Simplifying
3(7 + b) = 60
(7 * 3 + b * 3) = 60
(21 + 3b) = 60

Solving
21 + 3b = 60

Solving for variable 'b'.

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

Add '-21' to each side of the equation.
21 + -21 + 3b = 60 + -21

Combine like terms: 21 + -21 = 0
0 + 3b = 60 + -21
3b = 60 + -21

Combine like terms: 60 + -21 = 39
3b = 39

Divide each side by '3'.
b = 13

Simplifying
b = 13

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