3z(z+8)=3z^2-18z+42

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Solution for 3z(z+8)=3z^2-18z+42 equation:


Simplifying
3z(z + 8) = 3z2 + -18z + 42

Reorder the terms:
3z(8 + z) = 3z2 + -18z + 42
(8 * 3z + z * 3z) = 3z2 + -18z + 42
(24z + 3z2) = 3z2 + -18z + 42

Reorder the terms:
24z + 3z2 = 42 + -18z + 3z2

Add '-3z2' to each side of the equation.
24z + 3z2 + -3z2 = 42 + -18z + 3z2 + -3z2

Combine like terms: 3z2 + -3z2 = 0
24z + 0 = 42 + -18z + 3z2 + -3z2
24z = 42 + -18z + 3z2 + -3z2

Combine like terms: 3z2 + -3z2 = 0
24z = 42 + -18z + 0
24z = 42 + -18z

Solving
24z = 42 + -18z

Solving for variable 'z'.

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

Add '18z' to each side of the equation.
24z + 18z = 42 + -18z + 18z

Combine like terms: 24z + 18z = 42z
42z = 42 + -18z + 18z

Combine like terms: -18z + 18z = 0
42z = 42 + 0
42z = 42

Divide each side by '42'.
z = 1

Simplifying
z = 1

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