4=a(-1)+b

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


Simplifying
4 = a(-1) + b

Reorder the terms for easier multiplication:
4 = -1a + b

Solving
4 = -1a + b

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

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

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

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

Combine like terms: 4 + -4 = 0
0 + a = -4 + b
a = -4 + b

Simplifying
a = -4 + b

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