\(a,\left(37-17\right).\left(-5\right)+23.\left(13-17\right)\)
\(=20.\left(-5\right)+23.\left(-4\right)\)
\(=-100-92\)
\(=-192\)
\(b,\left(-57\right).\left(67-34\right)-67\left(34-57\right)\)
\(=\left(-57\right).33-67.\left(-23\right)\)
\(=-1881+1541\)
\(=-340\)