z+13+z+8=61

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Solution for z+13+z+8=61 equation:


Simplifying
z + 13 + z + 8 = 61

Reorder the terms:
13 + 8 + z + z = 61

Combine like terms: 13 + 8 = 21
21 + z + z = 61

Combine like terms: z + z = 2z
21 + 2z = 61

Solving
21 + 2z = 61

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 + -21 + 2z = 61 + -21

Combine like terms: 21 + -21 = 0
0 + 2z = 61 + -21
2z = 61 + -21

Combine like terms: 61 + -21 = 40
2z = 40

Divide each side by '2'.
z = 20

Simplifying
z = 20

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