3	+	11	-	7	+	9	=	16
x		+		+		-
14	x	6	+	1	+	4	=	89
:		-		-		x
2	x	13	+	16	+	12	=	54
+		+		x		-
5	-	15	x	10	-	8	=	-153
=		=		=		=
26		19		-152		-47