Question

найдите значение выражения::​

Answer 1

Объяснение:

4,2/6,3=42/63=14/21=2/3

(1 1/3)/(1 1/2)=(4/3)/(3/2)=4•2/(3•3)=8/9

7,5•1,8•4,8/(3,6•9,6•2,5)=75•18•48/(36•96•25)=3/(2•2)=3/4=0,75

1,2•2,25•0,15/(0,9•1,5•4,2)=120•225•15/(90•150•420)=4•45/(3•10•84)=15/(10•21)=5/(10•7)=1/(2•7)=1/14

(3,4÷1,8 -1 2/3 +7/9)/(0,918÷0,51+0,45)=(17/9 -15/9 +7/9)/(1,8+0,45)=(9/9)/2,25=100/225=4/9

(0,5•8 2/5 -1/2 ÷5/7)/(6,4+0,9÷1,5)=(1/2 •42/5 -1/2 •7/5)/(6,4 +90/15)=(21/5 -7/10)/(6,4+6)=(4,2-0,7)/12,4=35/124