-13z-(-15z)+2=20

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Solution for -13z-(-15z)+2=20 equation:


Simplifying
-13z + -1(-15z) + 2 = 20

Remove parenthesis around (-15z)
-13z + -1 * -15z + 2 = 20

Multiply -1 * -15
-13z + 15z + 2 = 20

Reorder the terms:
2 + -13z + 15z = 20

Combine like terms: -13z + 15z = 2z
2 + 2z = 20

Solving
2 + 2z = 20

Solving for variable 'z'.

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

Add '-2' to each side of the equation.
2 + -2 + 2z = 20 + -2

Combine like terms: 2 + -2 = 0
0 + 2z = 20 + -2
2z = 20 + -2

Combine like terms: 20 + -2 = 18
2z = 18

Divide each side by '2'.
z = 9

Simplifying
z = 9

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