Question

简算： 48x（5/6 + 5/8 - 5/12 -7/6) 1/9 x 19+ 1/9x 8 +1

Answer 1

48x（5/6 + 5/8 - 5/12 -7/6)
=48×（5/6）+48×(5/8)-48×(5/12)-48×(7/6)
=40+30-20-56
=-6;
1/9 x 19+ 1/9x 8 +1
=(1/9)(19+8)+1
=(1/9)×27+1
=3+1
=4;
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Answer 2

=(40+30-20-56)×1/9×19+8/9+1

Answer 3

（1）48*5/6+48*5/8-48*5/12-48*7/6
=40+30-20-56
=-6
(2)1/9*27+1
=3+1
=4