-9=4(-2)+b

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Solution for -9=4(-2)+b equation: 


Simplifying
-9 = 4(-2) + b

Multiply 4 * -2
-9 = -8 + b

Solving
-9 = -8 + 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.
-9 + -1b = -8 + b + -1b

Combine like terms: b + -1b = 0
-9 + -1b = -8 + 0
-9 + -1b = -8

Add '9' to each side of the equation.
-9 + 9 + -1b = -8 + 9

Combine like terms: -9 + 9 = 0
0 + -1b = -8 + 9
-1b = -8 + 9

Combine like terms: -8 + 9 = 1
-1b = 1

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

Simplifying
b = -1

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