6.4+2.1(z)-2=8.5

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


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

Reorder the terms:
6.4 + -2 + 2.1z = 8.5

Combine like terms: 6.4 + -2 = 4.4
4.4 + 2.1z = 8.5

Solving
4.4 + 2.1z = 8.5

Solving for variable 'z'.

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

Add '-4.4' to each side of the equation.
4.4 + -4.4 + 2.1z = 8.5 + -4.4

Combine like terms: 4.4 + -4.4 = 0.0
0.0 + 2.1z = 8.5 + -4.4
2.1z = 8.5 + -4.4

Combine like terms: 8.5 + -4.4 = 4.1
2.1z = 4.1

Divide each side by '2.1'.
z = 1.952380952

Simplifying
z = 1.952380952

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