Вычислите: а) (3/4+1/6):3+(5/6-1/2):9 б)(3/4-5/12)умножить на 3-1/16:1/8
1 .(3/4+1/6)/3=11/12*1/3=11/36 2. (5/6+-1/2):9=1/3*1/9=1/27 3. 11/36+1/27=37/108 1 3/4-5/12=4/12=1/3 2. 3-1/16:1/8=3-1/16*8/1=3-8/16=3-1/2=2.1/2 3. 1/3*2.1/2=1/3*5/2=5/6