Question

điểm)Tìm X:
a/ X : 2/7 = 8,27 + 19,73
……………………………………………
……………………………………………
……………………………………………
……………………………………………

b/ 8,15 x X +1,85 x X = 124
………………………………………………..
………………………………………………..
………………………………………………..
………………………………………………..

mik cần gấp

Answer 1

a) X : \(\dfrac{2}{7}\) = 8,27 + 19,73

X : \(\dfrac{2}{7}\) = 28

X = 28 x \(\dfrac{2}{7}\)

X = 8

b) 8,15 x X + 1,85 x X = 124

X x ( 8,15 + 1,85 ) = 124

X x 10 = 124

X = 124 : 10

X = 12,4