Пошаговое объяснение:
1/6*(4а-2) - 1/5*(5b+6) = 2/3а - 1/3 - b - 6/5 = 2/3а - 1 8/15 -b
2/3а - 1 8/15 -b= 2/3 *2 1/4- 1 8/15 - 3= 2/3 * 9/4 - 23/15 - 3= 3/2 - 23/15-3 =
= - 3 1/30
1/6 •2(2а-1)-b-6/5=
=1/3•(2a-1)-b-6/5=
=2/3a-1/3-b-6/5=
=2/3a-23/15-b=
Если а=2 1/4, b=3
2/3•2•1/4 - 23/15 -3 =
= 1/3 • 2 • 1/2 - 23/15 -3 =
=1/3 - 25/15 -3=
=-21/5=-4,2
Если поставь
Пошаговое объяснение:
1/6*(4а-2) - 1/5*(5b+6) = 2/3а - 1/3 - b - 6/5 = 2/3а - 1 8/15 -b
2/3а - 1 8/15 -b= 2/3 *2 1/4- 1 8/15 - 3= 2/3 * 9/4 - 23/15 - 3= 3/2 - 23/15-3 =
= - 3 1/30