(1+-3y-z)+4(.75+-.625z)-z=2

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Solution for (1+-3y-z)+4(.75+-.625z)-z=2 equation:


Simplifying
(1 + -3y + -1z) + 4(0.75 + -0.625z) + -1z = 2

Remove parenthesis around (1 + -3y + -1z)
1 + -3y + -1z + 4(0.75 + -0.625z) + -1z = 2
1 + -3y + -1z + (0.75 * 4 + -0.625z * 4) + -1z = 2
1 + -3y + -1z + (3 + -2.5z) + -1z = 2

Reorder the terms:
1 + 3 + -3y + -1z + -2.5z + -1z = 2

Combine like terms: 1 + 3 = 4
4 + -3y + -1z + -2.5z + -1z = 2

Combine like terms: -1z + -2.5z = -3.5z
4 + -3y + -3.5z + -1z = 2

Combine like terms: -3.5z + -1z = -4.5z
4 + -3y + -4.5z = 2

Solving
4 + -3y + -4.5z = 2

Solving for variable 'y'.

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

Add '-4' to each side of the equation.
4 + -3y + -4 + -4.5z = 2 + -4

Reorder the terms:
4 + -4 + -3y + -4.5z = 2 + -4

Combine like terms: 4 + -4 = 0
0 + -3y + -4.5z = 2 + -4
-3y + -4.5z = 2 + -4

Combine like terms: 2 + -4 = -2
-3y + -4.5z = -2

Add '4.5z' to each side of the equation.
-3y + -4.5z + 4.5z = -2 + 4.5z

Combine like terms: -4.5z + 4.5z = 0.0
-3y + 0.0 = -2 + 4.5z
-3y = -2 + 4.5z

Divide each side by '-3'.
y = 0.6666666667 + -1.5z

Simplifying
y = 0.6666666667 + -1.5z

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