3(5b)-7=13-5b

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Solution for 3(5b)-7=13-5b equation:


Simplifying
3(5b) + -7 = 13 + -5b

Remove parenthesis around (5b)
3 * 5b + -7 = 13 + -5b

Multiply 3 * 5
15b + -7 = 13 + -5b

Reorder the terms:
-7 + 15b = 13 + -5b

Solving
-7 + 15b = 13 + -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.
-7 + 15b + 5b = 13 + -5b + 5b

Combine like terms: 15b + 5b = 20b
-7 + 20b = 13 + -5b + 5b

Combine like terms: -5b + 5b = 0
-7 + 20b = 13 + 0
-7 + 20b = 13

Add '7' to each side of the equation.
-7 + 7 + 20b = 13 + 7

Combine like terms: -7 + 7 = 0
0 + 20b = 13 + 7
20b = 13 + 7

Combine like terms: 13 + 7 = 20
20b = 20

Divide each side by '20'.
b = 1

Simplifying
b = 1

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