4(z+5)-21=

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Solution for 4(z+5)-21= equation:


Simplifying
4(z + 5) + -21 = 0

Reorder the terms:
4(5 + z) + -21 = 0
(5 * 4 + z * 4) + -21 = 0
(20 + 4z) + -21 = 0

Reorder the terms:
20 + -21 + 4z = 0

Combine like terms: 20 + -21 = -1
-1 + 4z = 0

Solving
-1 + 4z = 0

Solving for variable 'z'.

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

Add '1' to each side of the equation.
-1 + 1 + 4z = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 4z = 0 + 1
4z = 0 + 1

Combine like terms: 0 + 1 = 1
4z = 1

Divide each side by '4'.
z = 0.25

Simplifying
z = 0.25

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