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5.9=-3.9(z+4.1)
We move all terms to the left:
5.9-(-3.9(z+4.1))=0
We calculate terms in parentheses: -(-3.9(z+4.1)), so:We get rid of parentheses
-3.9(z+4.1)
We multiply parentheses
-3.9z-15.99
Back to the equation:
-(-3.9z-15.99)
3.9z+15.99+5.9=0
We add all the numbers together, and all the variables
3.9z+21.89=0
We move all terms containing z to the left, all other terms to the right
3.9z=-21.89
z=-21.89/3.9
z=-5+2.39/3.9
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