0.4p-2.1=6.9

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Solution for 0.4p-2.1=6.9 equation: 


Simplifying
0.4p + -2.1 = 6.9

Reorder the terms:
-2.1 + 0.4p = 6.9

Solving
-2.1 + 0.4p = 6.9

Solving for variable 'p'.

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

Add '2.1' to each side of the equation.
-2.1 + 2.1 + 0.4p = 6.9 + 2.1

Combine like terms: -2.1 + 2.1 = 0.0
0.0 + 0.4p = 6.9 + 2.1
0.4p = 6.9 + 2.1

Combine like terms: 6.9 + 2.1 = 9
0.4p = 9

Divide each side by '0.4'.
p = 22.5

Simplifying
p = 22.5

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