Вычислитег] (4/3+1/9)×4 , д](1/2+1/3)×2 ,и а] (3/4-1/2)×5 , г,,] (1/4-1/12)×5

(4/3+1/9)*4=(12/9+1/9)*4=13/9*4=52/9=5 7/9
(1/2+1/3)2=(3/6+2/6)*2=5/6*2=5/3=  1 2/3
(3/4-1/2)*5=(3/4-2/4)*5=1/4*5=5/4=1 1/4
(1/4-1/12)*5=(3/12-1/12)*5=2/12*5=1/6*5=5/6