0.4(3z+5)+6.4=0.6(3z-6)

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Solution for 0.4(3z+5)+6.4=0.6(3z-6) equation:


Simplifying
0.4(3z + 5) + 6.4 = 0.6(3z + -6)

Reorder the terms:
0.4(5 + 3z) + 6.4 = 0.6(3z + -6)
(5 * 0.4 + 3z * 0.4) + 6.4 = 0.6(3z + -6)
(2 + 1.2z) + 6.4 = 0.6(3z + -6)

Reorder the terms:
2 + 6.4 + 1.2z = 0.6(3z + -6)

Combine like terms: 2 + 6.4 = 8.4
8.4 + 1.2z = 0.6(3z + -6)

Reorder the terms:
8.4 + 1.2z = 0.6(-6 + 3z)
8.4 + 1.2z = (-6 * 0.6 + 3z * 0.6)
8.4 + 1.2z = (-3.6 + 1.8z)

Solving
8.4 + 1.2z = -3.6 + 1.8z

Solving for variable 'z'.

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

Add '-1.8z' to each side of the equation.
8.4 + 1.2z + -1.8z = -3.6 + 1.8z + -1.8z

Combine like terms: 1.2z + -1.8z = -0.6z
8.4 + -0.6z = -3.6 + 1.8z + -1.8z

Combine like terms: 1.8z + -1.8z = 0.0
8.4 + -0.6z = -3.6 + 0.0
8.4 + -0.6z = -3.6

Add '-8.4' to each side of the equation.
8.4 + -8.4 + -0.6z = -3.6 + -8.4

Combine like terms: 8.4 + -8.4 = 0.0
0.0 + -0.6z = -3.6 + -8.4
-0.6z = -3.6 + -8.4

Combine like terms: -3.6 + -8.4 = -12
-0.6z = -12

Divide each side by '-0.6'.
z = 20

Simplifying
z = 20

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