7.8x-2.1=29.1

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Solution for 7.8x-2.1=29.1 equation: 


Simplifying
7.8x + -2.1 = 29.1

Reorder the terms:
-2.1 + 7.8x = 29.1

Solving
-2.1 + 7.8x = 29.1

Solving for variable 'x'.

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

Add '2.1' to each side of the equation.
-2.1 + 2.1 + 7.8x = 29.1 + 2.1

Combine like terms: -2.1 + 2.1 = 0.0
0.0 + 7.8x = 29.1 + 2.1
7.8x = 29.1 + 2.1

Combine like terms: 29.1 + 2.1 = 31.2
7.8x = 31.2

Divide each side by '7.8'.
x = 4

Simplifying
x = 4

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