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-4.2=-3.4+c/7
We simplify the equation to the form, which is simple to understand
-4.2=-3.4+c/7
We move all terms containing c to the left and all other terms to the right.
-0.14285714285714c=-3.4+4.2
We simplify left and right side of the equation.
-0.14285714285714c=0.8
We divide both sides of the equation by -00.14285714285714 to get c.
c=-5.6000000000001
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