b1:b=4; ni a1:a=b+c; d:d=a*b; n3 c1:c=b+c; 5 d2:d=a+b; n2 b2:b=a-c; c2:c=a*b; 7n4 f(a-b); 6 f(b+c); n7 8(a+b); Var la,b,c,d) Defs (a1,b1,b2,c1,c2,di,d2 h(a-c); Expr=la*b,a+b,a-b,a-c,b+c) 8 f(b+c);13