+4473 Find a common denominator: Easiest one would be 3 X 7 = 21...this means that you have to multiply -2 by 3 and 1 by 7 -->
-2(3) + 1(7) / 21 -->
-6 + 7 / 21 -->
1 / 21 or 0.0476190476190476.
+4473 Find a common denominator: Easiest one would be 3 X 7 = 21...this means that you have to multiply -2 by 3 and 1 by 7 -->
-2(3) + 1(7) / 21 -->
-6 + 7 / 21 -->
1 / 21 or 0.0476190476190476.
