a+-2z=7

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Solution for a+-2z=7 equation: 


Simplifying
a + -2z = 7

Solving
a + -2z = 7

Solving for variable 'a'.

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

Add '2z' to each side of the equation.
a + -2z + 2z = 7 + 2z

Combine like terms: -2z + 2z = 0
a + 0 = 7 + 2z
a = 7 + 2z

Simplifying
a = 7 + 2z

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