0.3(4z+7)+18.9=0.6(4z-5)

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Solution for 0.3(4z+7)+18.9=0.6(4z-5) equation:


Simplifying
0.3(4z + 7) + 18.9 = 0.6(4z + -5)

Reorder the terms:
0.3(7 + 4z) + 18.9 = 0.6(4z + -5)
(7 * 0.3 + 4z * 0.3) + 18.9 = 0.6(4z + -5)
(2.1 + 1.2z) + 18.9 = 0.6(4z + -5)

Reorder the terms:
2.1 + 18.9 + 1.2z = 0.6(4z + -5)

Combine like terms: 2.1 + 18.9 = 21
21 + 1.2z = 0.6(4z + -5)

Reorder the terms:
21 + 1.2z = 0.6(-5 + 4z)
21 + 1.2z = (-5 * 0.6 + 4z * 0.6)
21 + 1.2z = (-3 + 2.4z)

Solving
21 + 1.2z = -3 + 2.4z

Solving for variable 'z'.

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

Add '-2.4z' to each side of the equation.
21 + 1.2z + -2.4z = -3 + 2.4z + -2.4z

Combine like terms: 1.2z + -2.4z = -1.2z
21 + -1.2z = -3 + 2.4z + -2.4z

Combine like terms: 2.4z + -2.4z = 0.0
21 + -1.2z = -3 + 0.0
21 + -1.2z = -3

Add '-21' to each side of the equation.
21 + -21 + -1.2z = -3 + -21

Combine like terms: 21 + -21 = 0
0 + -1.2z = -3 + -21
-1.2z = -3 + -21

Combine like terms: -3 + -21 = -24
-1.2z = -24

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

Simplifying
z = 20

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