Tìm (x), biết:

a) \(x - 22 =  - 60\)

\(x =  - 60 + 22\)

\(x =  - 38\)

Vậy \(x =  - 38\).

b) \(2\left( {1 - x} \right) + 18 =  - 4\)

\(2\left( {1 - x} \right) =  - 22\)

\(1 - x =  - 11\)

\(x = 1 - \left( { - 11} \right)\)

\(x = 12\).

Vậy \(x = 12\).

c)\(\left( {4x + 11} \right) - \left( {x + 34} \right) = 67\)

\(4x + 11 - x - 34 = 67\)

\(4x - x = 67 - 11 + 34\)     

\(3x = 90\)

\(x = 30\)

Vậy \(x = 30\).