7x+4z=-13

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Solution for 7x+4z=-13 equation: 


Simplifying
7x + 4z = -13

Solving
7x + 4z = -13

Solving for variable 'x'.

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

Add '-4z' to each side of the equation.
7x + 4z + -4z = -13 + -4z

Combine like terms: 4z + -4z = 0
7x + 0 = -13 + -4z
7x = -13 + -4z

Divide each side by '7'.
x = -1.857142857 + -0.5714285714z

Simplifying
x = -1.857142857 + -0.5714285714z

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