4.2a-1.4b=2.1

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Solution for 4.2a-1.4b=2.1 equation: 


Simplifying
4.2a + -1.4b = 2.1

Solving
4.2a + -1.4b = 2.1

Solving for variable 'a'.

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

Add '1.4b' to each side of the equation.
4.2a + -1.4b + 1.4b = 2.1 + 1.4b

Combine like terms: -1.4b + 1.4b = 0.0
4.2a + 0.0 = 2.1 + 1.4b
4.2a = 2.1 + 1.4b

Divide each side by '4.2'.
a = 0.5 + 0.3333333333b

Simplifying
a = 0.5 + 0.3333333333b

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