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2=z-(-6.4)
We move all terms to the left:
2-(z-(-6.4))=0
We calculate terms in parentheses: -(z-(-6.4)), so:We get rid of parentheses
z-(-6.4)
We add all the numbers together, and all the variables
z+6.4
Back to the equation:
-(z+6.4)
-z-6.4+2=0
We add all the numbers together, and all the variables
-1z-4.4=0
We move all terms containing z to the left, all other terms to the right
-z=4.4
z=4.4/-1
z=-4+0.4/1
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