A=68,9+8,75+1,25
=68,9+(8,75+1,25)

=6,89+10=689
B=4,7 nhân 6,1+ 4,7 nhân 3,9

=4,7 nhân (6,1+3,9)

=4,7 nhân 10=47

ta có : A= 68,9+8,75+1,25

=(8,75+1,25)+68,9

=10+68,9

=78,9

\(\left(8,75+1,25\right)\times x=20\\ 10\times x=20\\ x=20:10\\ x=2\)

8,75 × x + 1,25 × x = 20

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

X x 10=20

       X=20:10

      X=2

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

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

10 x X = 20

X = 20 : 10

X = 2

8,75xX+1,25xX=20

{8,75+1,25}xX=20

             10xX=20

                  X=20:10

                  X=2

đây nha e

2

\(x\times\left(8,75+1,25\right)=20\)

\(x=20:10=2\)

8,75 × x + 1,25 × x = 20

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

=>x*10=20=>x=20:10=2

8,75 × x + 1,25 × x = 20

( 8,75 + 1,25)   x X  = 20

        10             x X  = 20

                             X=20 : 10

                             X=2

8.75 x X + 1.25 x X = 20

X( 8.75 + 1,25) = 20

10 x= 20

x= 20 : 10

x= 2

=>10x=20

hay x=2

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

x x 10 = 20

x = 20 : 10

x = 2

8,75 × x + 1,25 × x = 20

Xx ( 8,75 + 1,25) = 20

X x 10 =20

X = 20 : 10

X = 2

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

=>(8,75+1,25) x Y = 20

=>10 x Y = 20

=>Y= 20:10=2

=> Y * (8,75 + 1,25) = 20

=> Y * 10 = 20

=> Y = 2

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

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

Y*10=20

Y=2

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

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

x * 10 = 20

x = 20 : 10

x= 2

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

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

10                * x =20

 x = 20 : 10 

x = 2

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

8,75xX+1,25xX=20

{8,75+1,25}xX=20

             10xX=20

                  X=20:10

                  X=2

8,75xX+1,25xX=20

\(8,75\times x+1,25\times x=20\)

\(\left(8,75+1,25\right)\times x=20\)

\(10\times x=20\)

\(x=20:10\)

\(x=2\)