.3(z-4)=15

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Solution for .3(z-4)=15 equation:


Simplifying
0.3(z + -4) = 15

Reorder the terms:
0.3(-4 + z) = 15
(-4 * 0.3 + z * 0.3) = 15
(-1.2 + 0.3z) = 15

Solving
-1.2 + 0.3z = 15

Solving for variable 'z'.

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

Add '1.2' to each side of the equation.
-1.2 + 1.2 + 0.3z = 15 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
0.0 + 0.3z = 15 + 1.2
0.3z = 15 + 1.2

Combine like terms: 15 + 1.2 = 16.2
0.3z = 16.2

Divide each side by '0.3'.
z = 54

Simplifying
z = 54

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