0.4(4z+7)10.2=0.5(4z-6)

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Solution for 0.4(4z+7)10.2=0.5(4z-6) equation:


Simplifying
0.4(4z + 7) * 10.2 = 0.5(4z + -6)

Reorder the terms:
0.4(7 + 4z) * 10.2 = 0.5(4z + -6)

Reorder the terms for easier multiplication:
0.4 * 10.2(7 + 4z) = 0.5(4z + -6)

Multiply 0.4 * 10.2
4.08(7 + 4z) = 0.5(4z + -6)
(7 * 4.08 + 4z * 4.08) = 0.5(4z + -6)
(28.56 + 16.32z) = 0.5(4z + -6)

Reorder the terms:
28.56 + 16.32z = 0.5(-6 + 4z)
28.56 + 16.32z = (-6 * 0.5 + 4z * 0.5)
28.56 + 16.32z = (-3 + 2z)

Solving
28.56 + 16.32z = -3 + 2z

Solving for variable 'z'.

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

Add '-2z' to each side of the equation.
28.56 + 16.32z + -2z = -3 + 2z + -2z

Combine like terms: 16.32z + -2z = 14.32z
28.56 + 14.32z = -3 + 2z + -2z

Combine like terms: 2z + -2z = 0
28.56 + 14.32z = -3 + 0
28.56 + 14.32z = -3

Add '-28.56' to each side of the equation.
28.56 + -28.56 + 14.32z = -3 + -28.56

Combine like terms: 28.56 + -28.56 = 0.00
0.00 + 14.32z = -3 + -28.56
14.32z = -3 + -28.56

Combine like terms: -3 + -28.56 = -31.56
14.32z = -31.56

Divide each side by '14.32'.
z = -2.203910615

Simplifying
z = -2.203910615

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