Answer:-
1/y = 1/x+1/z
Subtract 1/z from both sides:
1/y -1/z = 1/x
Multiply both sides by yz:
z -y = yz/x
Multiply both sides by x:
x(z -y) = yz
Divide both sides by z -y
x = yz/(z-y)
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When transposed and made the subject of the given equation: x = 2/y-3
It is a linear equation in two unknown variables, y and c. One linear equation in two unknowns cannot be solved, it can only be arranged so that one or the other variable is the subject of the equation. However, that requires you to identify which variable is to be made the subject of the equation.
A better equation would be dE=dm*c2 showing that a change in mass is equivalent to a change in energy
It is an equation ... Anything with an equals is an equation 2+b=6 Anything without an equals is an expression 2+a
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