6.4+2.1(c-2)=8.5

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Solution for 6.4+2.1(c-2)=8.5 equation: 


Simplifying
6.4 + 2.1(c + -2) = 8.5

Reorder the terms:
6.4 + 2.1(-2 + c) = 8.5
6.4 + (-2 * 2.1 + c * 2.1) = 8.5
6.4 + (-4.2 + 2.1c) = 8.5

Combine like terms: 6.4 + -4.2 = 2.2
2.2 + 2.1c = 8.5

Solving
2.2 + 2.1c = 8.5

Solving for variable 'c'.

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

Add '-2.2' to each side of the equation.
2.2 + -2.2 + 2.1c = 8.5 + -2.2

Combine like terms: 2.2 + -2.2 = 0.0
0.0 + 2.1c = 8.5 + -2.2
2.1c = 8.5 + -2.2

Combine like terms: 8.5 + -2.2 = 6.3
2.1c = 6.3

Divide each side by '2.1'.
c = 3

Simplifying
c = 3

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