Question

8,75*x+1,25*x=20

Answer 1

8.75*x+1.25*x=20

x*(1.25+8.75)=20

x*10=20

x=20:10

x=2

k cho mh  nha

Answer 2

(8,75 + 1,25) *x =20

10                * x =20

 x = 20 : 10 

x = 2

Answer 3

100 - 100 + 666 - 555 + 111 - 111 + 111 - 222

= 0 + 666 - 555 + 111 - 111 + 111 - 222

= 666 - 555 + 111 - 111 + 111 - 222

= 111 + 111 - 111 + 111 - 222

= 222 - 111 + 111 - 222

= 111 + 111 - 222

= 222 - 222

= 0

Chuc ban hoc tot

Answer 4

x = 2 nha