=4a+5b

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Solution for =4a+5b equation: 


Simplifying
0 = 4a + 5b

Solving
0 = 4a + 5b

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
0 + -4a = 4a + -4a + 5b
Remove the zero:
-4a = 4a + -4a + 5b

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

Divide each side by '-4'.
a = -1.25b

Simplifying
a = -1.25b

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