1) 1/4a-2/3b-5/6a+3/4b , если а= -1 2/7 ; b = - 36

Question

1) 1/4a-2/3b-5/6a+3/4b , если а= -1 2/7 ; b = - 36

Answer 1

1/4a-5/6a-2/3b+3/4b=3/12a-10/12a-8/12b+9/12b=-7/12a+7/12b=-7/12a*(-1 2/7)+7/12b*(-36)=3/12+21=21 3/12=21 1/4