37.2.(2) Найдите значение выражения:

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(3а-7) / (2а+5)

(3а-7) / (2а+5) = (3*(-2)-7) / (2*(-2)+5) =

=(-6-7) / (-4+5) = -13 / 1 = -13

(3а-7) / (2а+5) = (3*(0,4)-7) / (2*(0,4)+5) =

=(1,2-7) / (0,8+5) = -5,8 / 5,8= -1

(3а-7) / (2а+5) = (3*(0)-7) / (2*(0)+5) =

=(0-7) / (0+5) = -7 / 5 = -1 2/5 = -1,4

(3а-7) / (2а+5) = (3*(2,5)-7) / (2*(2,5)+5) =

=(7,5-7) / (5+5) = 0,5 / 10 = 5/100 = 0,05