0.4(4z+5)+18.5=0.7(4z-5)

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Solution for 0.4(4z+5)+18.5=0.7(4z-5) equation:


Simplifying
0.4(4z + 5) + 18.5 = 0.7(4z + -5)

Reorder the terms:
0.4(5 + 4z) + 18.5 = 0.7(4z + -5)
(5 * 0.4 + 4z * 0.4) + 18.5 = 0.7(4z + -5)
(2 + 1.6z) + 18.5 = 0.7(4z + -5)

Reorder the terms:
2 + 18.5 + 1.6z = 0.7(4z + -5)

Combine like terms: 2 + 18.5 = 20.5
20.5 + 1.6z = 0.7(4z + -5)

Reorder the terms:
20.5 + 1.6z = 0.7(-5 + 4z)
20.5 + 1.6z = (-5 * 0.7 + 4z * 0.7)
20.5 + 1.6z = (-3.5 + 2.8z)

Solving
20.5 + 1.6z = -3.5 + 2.8z

Solving for variable 'z'.

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

Add '-2.8z' to each side of the equation.
20.5 + 1.6z + -2.8z = -3.5 + 2.8z + -2.8z

Combine like terms: 1.6z + -2.8z = -1.2z
20.5 + -1.2z = -3.5 + 2.8z + -2.8z

Combine like terms: 2.8z + -2.8z = 0.0
20.5 + -1.2z = -3.5 + 0.0
20.5 + -1.2z = -3.5

Add '-20.5' to each side of the equation.
20.5 + -20.5 + -1.2z = -3.5 + -20.5

Combine like terms: 20.5 + -20.5 = 0.0
0.0 + -1.2z = -3.5 + -20.5
-1.2z = -3.5 + -20.5

Combine like terms: -3.5 + -20.5 = -24
-1.2z = -24

Divide each side by '-1.2'.
z = 20

Simplifying
z = 20

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