5.7a+4.2=28

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Solution for 5.7a+4.2=28 equation:


Simplifying
5.7a + 4.2 = 28

Reorder the terms:
4.2 + 5.7a = 28

Solving
4.2 + 5.7a = 28

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 + 5.7a = 28 + -4.2

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + 5.7a = 28 + -4.2
5.7a = 28 + -4.2

Combine like terms: 28 + -4.2 = 23.8
5.7a = 23.8

Divide each side by '5.7'.
a = 4.175438596

Simplifying
a = 4.175438596

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