61=z+13+z+8

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


Simplifying
61 = z + 13 + z + 8

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

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

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

Solving
61 = 21 + 2z

Solving for variable 'z'.

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

Add '-2z' to each side of the equation.
61 + -2z = 21 + 2z + -2z

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

Add '-61' to each side of the equation.
61 + -61 + -2z = 21 + -61

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

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

Divide each side by '-2'.
z = 20

Simplifying
z = 20

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