5*(4.5+1 5/6)*2/3=2 1/3

Question

5*(4.5+1 5/6)*2/3=2 1/3

Answer 1

5×(4,5х+15/6)×2/3=21/3
5×(4,5х+15/6)=21/3:2/3
5×(4,5х+15/6)=10,5
4,5х+15/6=10,5:5
4,5х+15/6=2,1
4,5х=21/10-15/6(общий знаменатель 30)
4,5х=63/30-75/30
4,5х=-12/30
х=-0,4:4,5
х=-4/45