4=5(-1)+b

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Solution for 4=5(-1)+b equation:


Simplifying
4 = 5(-1) + b

Multiply 5 * -1
4 = -5 + b

Solving
4 = -5 + 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.
4 + -1b = -5 + b + -1b

Combine like terms: b + -1b = 0
4 + -1b = -5 + 0
4 + -1b = -5

Add '-4' to each side of the equation.
4 + -4 + -1b = -5 + -4

Combine like terms: 4 + -4 = 0
0 + -1b = -5 + -4
-1b = -5 + -4

Combine like terms: -5 + -4 = -9
-1b = -9

Divide each side by '-1'.
b = 9

Simplifying
b = 9

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