Ex 4 punctele e,f,g,h
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4)
f)
[tex]5x - 4 = 0 \\5 x = 4 \\ \boxed{ x = \frac{4}{5} }[/tex]
g)
[tex] - 7x - 14 = 0 \\ - 7x = 14 \\ x = \frac{14}{ - 7} \\ \boxed{ x = - 2}[/tex]