Question

Tìm x:

a) x . 4,25 = 17

b) 116 : x = 14,5

c) 15 . x = 8

d) 729 : x = 36

Answer 1

\(a,x.4,25=7\\ \Rightarrow x=7:4,25\\ \Rightarrow x=\dfrac{28}{17}\\ b,116:x=14,5\\ \Rightarrow x=116:14,5\\ \Rightarrow x=8\\ c,15.x=8\\ \Rightarrow x=\dfrac{8}{15}\\ c,729:x=36\\ \Rightarrow x=729:36\\ \Rightarrow x=20,25\)

Answer 2

Tìm x:

a) x . 4,25 = 17 

x = 17 : 4,25

x = 4

b) 116 : x = 14,5

x = 116 : 14,5

x = 8

c) 15 . x = 8 

x = 8 : 15

x = 0.53333333333

d) 729 : x = 36

x = 729 : 36

x = 20.25