P adalah 3/4 Q adalah 2/3 R adalah 7/9 (1.) P✖️(Q+R)=.... (2.) P✖️(Q-R)=.... (3.) (P✖️Q) - (Q✖️R) + (P✖️R)=.... Tolong pakai cara ya...

1. P × ( Q + R )
=> (3/4) × ((2/3) + (7/9))
=> (3/4) × ((6/9) + (7/9))
=> (3/4) × (13/9)
=> (39/36)
=> 1(3/36)
=> 1(1/13)

2. P × (Q - R)
=> (3/4) × ((2/3) - (7/9))
=> (3/4) × ((6/9) - (7/9))
=> (3/4) × (-1/9)
=> (-3/36)
=> (-1/13)

3. (P × Q) - (Q × R) + (P × R)
=> ((3/4) × (2/3)) - ((2/3) × (7/9)) + ((3/4) × (7/9))
=> (6/12) - (14/27) + (21/36)
=> (5/108) - (56/108) + (63/108)
=> (12/108)
=> (1/9)