1.76乘以5-3目录
8加2乘以(根号5-3)-3乘以根号3
=8 2根号5-6-3根号3
=2 2根号5-3根号3
祝学习进步
7/6*(-3/5)-6/7*2/5 7/6*(-1又4/5)
=7/6*(-3/5-1又4/5)-6/7*2/5
=7/6*(-12/5)-12/35
=-14/5-12/35
=-110/35
=-22/7
解：（5/9-1/2乘1/3）除5/6=(5/9-1/2X1/3)÷5/6=(5/9-1/6)X6/5=5/9X6/5-1/6X6/5=6/9-1/5=10/15-3/15=7/15