20=6+7(z+4)

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Solution for 20=6+7(z+4) equation:


Simplifying
20 = 6 + 7(z + 4)

Reorder the terms:
20 = 6 + 7(4 + z)
20 = 6 + (4 * 7 + z * 7)
20 = 6 + (28 + 7z)

Combine like terms: 6 + 28 = 34
20 = 34 + 7z

Solving
20 = 34 + 7z

Solving for variable 'z'.

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

Add '-7z' to each side of the equation.
20 + -7z = 34 + 7z + -7z

Combine like terms: 7z + -7z = 0
20 + -7z = 34 + 0
20 + -7z = 34

Add '-20' to each side of the equation.
20 + -20 + -7z = 34 + -20

Combine like terms: 20 + -20 = 0
0 + -7z = 34 + -20
-7z = 34 + -20

Combine like terms: 34 + -20 = 14
-7z = 14

Divide each side by '-7'.
z = -2

Simplifying
z = -2

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