-1=3(5)+b

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Solution for -1=3(5)+b equation:


Simplifying
-1 = 3(5) + b

Multiply 3 * 5
-1 = 15 + b

Solving
-1 = 15 + 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.
-1 + -1b = 15 + b + -1b

Combine like terms: b + -1b = 0
-1 + -1b = 15 + 0
-1 + -1b = 15

Add '1' to each side of the equation.
-1 + 1 + -1b = 15 + 1

Combine like terms: -1 + 1 = 0
0 + -1b = 15 + 1
-1b = 15 + 1

Combine like terms: 15 + 1 = 16
-1b = 16

Divide each side by '-1'.
b = -16

Simplifying
b = -16

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