(Z+7)(z-3)=0

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Solution for (Z+7)(z-3)=0 equation:


Simplifying
(Z + 7)(z + -3) = 0

Reorder the terms:
(7 + Z)(z + -3) = 0

Reorder the terms:
(7 + Z)(-3 + z) = 0

Multiply (7 + Z) * (-3 + z)
(7(-3 + z) + Z(-3 + z)) = 0
((-3 * 7 + z * 7) + Z(-3 + z)) = 0
((-21 + 7z) + Z(-3 + z)) = 0
(-21 + 7z + (-3 * Z + z * Z)) = 0
(-21 + 7z + (-3Z + zZ)) = 0

Reorder the terms:
(-21 + -3Z + 7z + zZ) = 0
(-21 + -3Z + 7z + zZ) = 0

Solving
-21 + -3Z + 7z + zZ = 0

Solving for variable 'Z'.

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

Add '21' to each side of the equation.
-21 + -3Z + 7z + 21 + zZ = 0 + 21

Reorder the terms:
-21 + 21 + -3Z + 7z + zZ = 0 + 21

Combine like terms: -21 + 21 = 0
0 + -3Z + 7z + zZ = 0 + 21
-3Z + 7z + zZ = 0 + 21

Combine like terms: 0 + 21 = 21
-3Z + 7z + zZ = 21

Add '-7z' to each side of the equation.
-3Z + 7z + -7z + zZ = 21 + -7z

Combine like terms: 7z + -7z = 0
-3Z + 0 + zZ = 21 + -7z
-3Z + zZ = 21 + -7z

Reorder the terms:
-21 + -3Z + 7z + zZ = 21 + -7z + -21 + 7z

Reorder the terms:
-21 + -3Z + 7z + zZ = 21 + -21 + -7z + 7z

Combine like terms: 21 + -21 = 0
-21 + -3Z + 7z + zZ = 0 + -7z + 7z
-21 + -3Z + 7z + zZ = -7z + 7z

Combine like terms: -7z + 7z = 0
-21 + -3Z + 7z + zZ = 0

The solution to this equation could not be determined.

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