\(x:0,25+x:0,125-x:0,1=12,4\)

\(x.4+x.8-x.10=12,4\)

\(x\left(4+8-10\right)=12,4\)

\(x.2=12,4\)

\(x=12,4:2\)

\(x=6,2\)

Vậy \(x=6,2\)

x : 0,25 + x : 0,125 - x : 0,1 = 12,4 

x . 4 + x . 8 - x  . 10 = 12,4 

x (  4 + 8 - 10 ) = 12,4 

x . 2 = 12,4

x = 12,4 : 2 

x = 6,2

Nhớ  li ke nha!

y:0,125+y:0,25+y:0,5+y:0,1+y:0,01=12,4

Xét vế trái:

y:0,125+y:0,25+y:0,5+y:0,1+y:0,01

=y*8+y*4+y*2+y*10+y*100

=y*(8+4+2+10+100)

=y*124

->y:0,125+y:0,25+y:0,5+y:0,1+y:0,01=y*124

y*124=12.4

y=12.4:124

y=0.1

a.124/0.25+6*124

=124*4+124*6

=124*(4+6)

=124*10=1240

a) 1240

b) 124

c) 0

12,4:0,5+12,4*91+6,1*6+12,4:0,25

=12,4*2+12,4*91+12,4*3+12,4*4

=12,4*(2+91+3+4)

=12,4*100

=1240

a) 12,4 x 72,53 + 27,47 x 12,4

= 12,4×(72,53+27,47)

=12,4×100

=1240

cám ơn 

1240

60.49

tik mik nha

1) 12,4x72,53+27,47x12,4

= 12,4x(72,53+27,47)

= 12,4 x 100

=1240

2) 32,42+ 10,49+ 17,58

= (32,42+17,58) + 10,49

= 50 + 10,49

= 60,49

= 1248
= 312

12.48 : 0.5 x 6.25 x 4 x 2 = 1248

2 x 3.12 x 1.25 : 0.25 x 10 = 312

a,= 12,4 x 2+12,4x8

= 12,4x(2+8)

= 12,4x10

=124

b, = 0,9x95+0,9x2x2+0,9x1

= 0,9x(95+2+2+1)

= 0,9x100

= 90

tick nha bạn

a. =12.4*(2+8) = 12.4*10= 124

b. 0.9* ( 95+4+1 ) =0.9*100= 90

Tick nha!!!!!!!!! Thank you