(4 1/3 + 3 1/5 ) :113 = 1/15
выражением:
= ( 4 5/15 + 3 3/15 ) :113=
= 7 8/15 : 113 = 113/15 * 1/113 =
= 1/15
по действиям:
1) 4 1/3 + 3 1/5 = 4 5/15 + 3 3/15 = 7 8/15
2) 7 8/15 : 113 = (7*15+8)/15 * 1/113 = (113*1)/(15*113)= 1/15
(6 - 7 1/8 )* (2/9 + 2/3 ) = -1
выражением:
= - 1 1/8 *(2/9 +6/9) = - 9/8 * 8/9 = -1
по действиям:
1) 6 - 7 1/8= - ( 7 1/8 - 6 ) = - 1 1/8
2) 2/9 + 2/3 = 2/9 + (2*3)/(3*3) = (2+6)/9 =8/9
3) - 1 1/8 * 8/9 = -9/8 * 8/9 = -1