Solve x/42=3/7 using two different strategies. explain each strategy

Strategy 1: To transport 1/42 to the other side, take a reciprocal of it and becomes 42. To get the value x, this 42 is multiplied by 3/7. That is

x = 42 * (3/7) = 126/7 = 18

Strategy 2: To cancel 1/42 beside x, you multiply by 42 on both sides.

[ (1/42) * x]*42 = 42 * (3/7)

x = 126/7

x = 18