Question

Tim x

a,Xx3x5=2,7

b,1,2;Xx4=20

Answer 1

a, X x 3 x 5 = 2,7

X x 15 = 2,7

        X = 2,7 : 15

        X = 0,18

b, 1,2 : X x 4 = 20

X x 4 = 1,2 : 20

X x 4 = 0,06

      X = 0,06 : 4

      X = 0,015

Answer 2

dang quang thanh k tớ nhá

a) \(x.3.5=2,7\)

\(15x=2,7\)

\(x=0,18\)

vậy \(x=0,18\)

b) \(1,2:x.4=20\)

\(1,2:x=5\)

\(x=1,2:5\)

\(x=0,24\)

vậy \(x=0,24\)