= (-121).63+63.(-53)-63.26
= 63. [(-121) + (-53) - 26]
= 63 . (-200)
= -12600
\(112\cdot\left(-63\right)+63\cdot\left(-53\right)-63\cdot26\\ =\left(-112\right)\cdot63+63\cdot\left(-53\right)-63\cdot26\\ =63\cdot\left[\left(-112\right)+\left(-53\right)-26\right]\\ =63\cdot\left(-191\right)\\ =-12033\)
`121.(-63)+63.(-53) - 63.26`
`=(-121) . 63 + 63.(-53) - 63 . 26`
`=63 . (-121 - 53 - 26)`
`=63 . ( -174 - 26)`
`=63.(-200)`
`=-12600`