1)(3/4-5/12+1/6)÷1/36 =(3/4-5/12+1/6)×36 =3/4×36 -5/12×36 +1/6 ×36 =27-15+6 =18 2)5/7÷8/3+1/7x3/8+3/8÷7 =5/7 ×3/8+1/7 ×3/8+1/7 ×3/8 =(5/6+1/7+1/7) ×3/8 =3/8
