.3(3z+7)+1.9=.5(3z-4)

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Solution for .3(3z+7)+1.9=.5(3z-4) equation:


Simplifying
0.3(3z + 7) + 1.9 = 0.5(3z + -4)

Reorder the terms:
0.3(7 + 3z) + 1.9 = 0.5(3z + -4)
(7 * 0.3 + 3z * 0.3) + 1.9 = 0.5(3z + -4)
(2.1 + 0.9z) + 1.9 = 0.5(3z + -4)

Reorder the terms:
2.1 + 1.9 + 0.9z = 0.5(3z + -4)

Combine like terms: 2.1 + 1.9 = 4
4 + 0.9z = 0.5(3z + -4)

Reorder the terms:
4 + 0.9z = 0.5(-4 + 3z)
4 + 0.9z = (-4 * 0.5 + 3z * 0.5)
4 + 0.9z = (-2 + 1.5z)

Solving
4 + 0.9z = -2 + 1.5z

Solving for variable 'z'.

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

Add '-1.5z' to each side of the equation.
4 + 0.9z + -1.5z = -2 + 1.5z + -1.5z

Combine like terms: 0.9z + -1.5z = -0.6z
4 + -0.6z = -2 + 1.5z + -1.5z

Combine like terms: 1.5z + -1.5z = 0.0
4 + -0.6z = -2 + 0.0
4 + -0.6z = -2

Add '-4' to each side of the equation.
4 + -4 + -0.6z = -2 + -4

Combine like terms: 4 + -4 = 0
0 + -0.6z = -2 + -4
-0.6z = -2 + -4

Combine like terms: -2 + -4 = -6
-0.6z = -6

Divide each side by '-0.6'.
z = 10

Simplifying
z = 10

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