.1(f-7)+.05f=.8

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Solution for .1(f-7)+.05f=.8 equation: 


Simplifying
0.1(f + -7) + 0.05f = 0.8

Reorder the terms:
0.1(-7 + f) + 0.05f = 0.8
(-7 * 0.1 + f * 0.1) + 0.05f = 0.8
(-0.7 + 0.1f) + 0.05f = 0.8

Combine like terms: 0.1f + 0.05f = 0.15f
-0.7 + 0.15f = 0.8

Solving
-0.7 + 0.15f = 0.8

Solving for variable 'f'.

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

Add '0.7' to each side of the equation.
-0.7 + 0.7 + 0.15f = 0.8 + 0.7

Combine like terms: -0.7 + 0.7 = 0.0
0.0 + 0.15f = 0.8 + 0.7
0.15f = 0.8 + 0.7

Combine like terms: 0.8 + 0.7 = 1.5
0.15f = 1.5

Divide each side by '0.15'.
f = 10

Simplifying
f = 10

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