1.28z+3=15-0.4z

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Solution for 1.28z+3=15-0.4z equation:


Simplifying
1.28z + 3 = 15 + -0.4z

Reorder the terms:
3 + 1.28z = 15 + -0.4z

Solving
3 + 1.28z = 15 + -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.
3 + 1.28z + 0.4z = 15 + -0.4z + 0.4z

Combine like terms: 1.28z + 0.4z = 1.68z
3 + 1.68z = 15 + -0.4z + 0.4z

Combine like terms: -0.4z + 0.4z = 0.0
3 + 1.68z = 15 + 0.0
3 + 1.68z = 15

Add '-3' to each side of the equation.
3 + -3 + 1.68z = 15 + -3

Combine like terms: 3 + -3 = 0
0 + 1.68z = 15 + -3
1.68z = 15 + -3

Combine like terms: 15 + -3 = 12
1.68z = 12

Divide each side by '1.68'.
z = 7.142857143

Simplifying
z = 7.142857143

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