внение! a) 2x+5=0 б) 4x+10=-10 в) 6(9+4x)=4x-4

a) \(2x + 5 = 0\)

\(2x = -5\)

\(x = -\frac{5}{2}\)

\(x = -2,5\)

б) \(4x + 10 = -10\)

\(4x = -20\)

\(x = -\frac{20}{4}\)

\(x = -5\)

в) \(6(9 + 4x) = 4x - 4\)

\(54 + 24x = 4x - 4\)

\(24x - 4x = -4 - 54\)

\(20x = -58\)

\(x = -\frac{58}{20}\)

\(x = -2,9\)

Ответ: а) -2,5; б) -5; в) -2,9