4a-1=42

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Solution for 4a-1=42 equation: 


Simplifying
4a + -1 = 42

Reorder the terms:
-1 + 4a = 42

Solving
-1 + 4a = 42

Solving for variable 'a'.

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

Add '1' to each side of the equation.
-1 + 1 + 4a = 42 + 1

Combine like terms: -1 + 1 = 0
0 + 4a = 42 + 1
4a = 42 + 1

Combine like terms: 42 + 1 = 43
4a = 43

Divide each side by '4'.
a = 10.75

Simplifying
a = 10.75

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