2(10f+9)=5(2f+1)

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Solution for 2(10f+9)=5(2f+1) equation:


Simplifying
2(10f + 9) = 5(2f + 1)

Reorder the terms:
2(9 + 10f) = 5(2f + 1)
(9 * 2 + 10f * 2) = 5(2f + 1)
(18 + 20f) = 5(2f + 1)

Reorder the terms:
18 + 20f = 5(1 + 2f)
18 + 20f = (1 * 5 + 2f * 5)
18 + 20f = (5 + 10f)

Solving
18 + 20f = 5 + 10f

Solving for variable 'f'.

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

Add '-10f' to each side of the equation.
18 + 20f + -10f = 5 + 10f + -10f

Combine like terms: 20f + -10f = 10f
18 + 10f = 5 + 10f + -10f

Combine like terms: 10f + -10f = 0
18 + 10f = 5 + 0
18 + 10f = 5

Add '-18' to each side of the equation.
18 + -18 + 10f = 5 + -18

Combine like terms: 18 + -18 = 0
0 + 10f = 5 + -18
10f = 5 + -18

Combine like terms: 5 + -18 = -13
10f = -13

Divide each side by '10'.
f = -1.3

Simplifying
f = -1.3

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