Question

найдите значение выражений 8 7/10 - ( 7 4/5- а) при а = 6 1/2

Answer 1

1))8 7/10- (7 4/5 -а) = 8 7/10- (7 4/5- 6 1/2)= 8 7/10- (7 (4•2)/(5•2)- 6 (1•5)/(2•5))= 8 7/10- (7 8/10 - 6 5/10)= 8 7/10- (1 3/10)= 7 4/10= 7 2/5. 

Answer 2

спс