4.2+2.5a=9.2

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Solution for 4.2+2.5a=9.2 equation: 


Simplifying
4.2 + 2.5a = 9.2

Solving
4.2 + 2.5a = 9.2

Solving for variable 'a'.

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

Add '-4.2' to each side of the equation.
4.2 + -4.2 + 2.5a = 9.2 + -4.2

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + 2.5a = 9.2 + -4.2
2.5a = 9.2 + -4.2

Combine like terms: 9.2 + -4.2 = 5
2.5a = 5

Divide each side by '2.5'.
a = 2

Simplifying
a = 2

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