să se calculeze valorile următoarelor expresii:(20:2)+(30:10)+(26:2)+(33:3) b)E=(65:5)+(22:2)+(63:3)+(94:2) c)E=(39:3)+(44:4)+(60:2)-(55:5) d)E=(77:7)+(80:2)+(84:2)-(42:2) e)E=(99:9)+(70:7)+(99:3)-(88:2) f)E=(85:5)+(75:3)+(65:5)-(84:4) g)E=(87:3)+(52:2)+(63:3)-(95:5)​