0.72+1.9+1.9+0.12=5.5-0.4z

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Solution for 0.72+1.9+1.9+0.12=5.5-0.4z equation: 


Simplifying
0.72 + 1.9 + 1.9 + 0.12 = 5.5 + -0.4z

Combine like terms: 0.72 + 1.9 = 2.62
2.62 + 1.9 + 0.12 = 5.5 + -0.4z

Combine like terms: 2.62 + 1.9 = 4.52
4.52 + 0.12 = 5.5 + -0.4z

Combine like terms: 4.52 + 0.12 = 4.64
4.64 = 5.5 + -0.4z

Solving
4.64 = 5.5 + -0.4z

Solving for variable 'z'.

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

Add '0.4z' to each side of the equation.
4.64 + 0.4z = 5.5 + -0.4z + 0.4z

Combine like terms: -0.4z + 0.4z = 0.0
4.64 + 0.4z = 5.5 + 0.0
4.64 + 0.4z = 5.5

Add '-4.64' to each side of the equation.
4.64 + -4.64 + 0.4z = 5.5 + -4.64

Combine like terms: 4.64 + -4.64 = 0.00
0.00 + 0.4z = 5.5 + -4.64
0.4z = 5.5 + -4.64

Combine like terms: 5.5 + -4.64 = 0.86
0.4z = 0.86

Divide each side by '0.4'.
z = 2.15

Simplifying
z = 2.15

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