.4(3z+6)+7.1=.5(3z-5)

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Solution for .4(3z+6)+7.1=.5(3z-5) equation:


Simplifying
0.4(3z + 6) + 7.1 = 0.5(3z + -5)

Reorder the terms:
0.4(6 + 3z) + 7.1 = 0.5(3z + -5)
(6 * 0.4 + 3z * 0.4) + 7.1 = 0.5(3z + -5)
(2.4 + 1.2z) + 7.1 = 0.5(3z + -5)

Reorder the terms:
2.4 + 7.1 + 1.2z = 0.5(3z + -5)

Combine like terms: 2.4 + 7.1 = 9.5
9.5 + 1.2z = 0.5(3z + -5)

Reorder the terms:
9.5 + 1.2z = 0.5(-5 + 3z)
9.5 + 1.2z = (-5 * 0.5 + 3z * 0.5)
9.5 + 1.2z = (-2.5 + 1.5z)

Solving
9.5 + 1.2z = -2.5 + 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.
9.5 + 1.2z + -1.5z = -2.5 + 1.5z + -1.5z

Combine like terms: 1.2z + -1.5z = -0.3z
9.5 + -0.3z = -2.5 + 1.5z + -1.5z

Combine like terms: 1.5z + -1.5z = 0.0
9.5 + -0.3z = -2.5 + 0.0
9.5 + -0.3z = -2.5

Add '-9.5' to each side of the equation.
9.5 + -9.5 + -0.3z = -2.5 + -9.5

Combine like terms: 9.5 + -9.5 = 0.0
0.0 + -0.3z = -2.5 + -9.5
-0.3z = -2.5 + -9.5

Combine like terms: -2.5 + -9.5 = -12
-0.3z = -12

Divide each side by '-0.3'.
z = 40

Simplifying
z = 40

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