-2=2(5)+b

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Solution for -2=2(5)+b equation:


Simplifying
-2 = 2(5) + b

Multiply 2 * 5
-2 = 10 + b

Solving
-2 = 10 + 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.
-2 + -1b = 10 + b + -1b

Combine like terms: b + -1b = 0
-2 + -1b = 10 + 0
-2 + -1b = 10

Add '2' to each side of the equation.
-2 + 2 + -1b = 10 + 2

Combine like terms: -2 + 2 = 0
0 + -1b = 10 + 2
-1b = 10 + 2

Combine like terms: 10 + 2 = 12
-1b = 12

Divide each side by '-1'.
b = -12

Simplifying
b = -12

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