\(435+\left(-43\right)+\left(-483\right)+\left(-57\right)+383+\left(-415\right)\)
\(=\left[435+\left(-415\right)\right]+\left[\left(-43\right)+\left(-57\right)\right]+\left[\left(-483\right)+383\right]\)
\(=20+\left(-100\right)+\left(-100\right)=-180\)