21+7(z-3)=6z-5

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Solution for 21+7(z-3)=6z-5 equation:


Simplifying
21 + 7(z + -3) = 6z + -5

Reorder the terms:
21 + 7(-3 + z) = 6z + -5
21 + (-3 * 7 + z * 7) = 6z + -5
21 + (-21 + 7z) = 6z + -5

Combine like terms: 21 + -21 = 0
0 + 7z = 6z + -5
7z = 6z + -5

Reorder the terms:
7z = -5 + 6z

Solving
7z = -5 + 6z

Solving for variable 'z'.

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

Add '-6z' to each side of the equation.
7z + -6z = -5 + 6z + -6z

Combine like terms: 7z + -6z = 1z
1z = -5 + 6z + -6z

Combine like terms: 6z + -6z = 0
1z = -5 + 0
1z = -5

Divide each side by '1'.
z = -5

Simplifying
z = -5

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