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

X x 10 = 20

X=20:10=2

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

\(=>x=\dfrac{20}{8,75+1,25}=\dfrac{20}{10}=2\)

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

x x 10 = 20

x = 20 : 10

x = 2

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

x x 10 = 20

x = 20 : 10

x = 2

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

10 + x = 20

x = 20 - 10

x = 10

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

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

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

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

10 x x = 20

x = 20 : 10

x = 2

tham khảo

8,75 * x + 1,25 * x = 20
<=>10*x=20
<=>x=20 : 10 
<=> x=2

x=2

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

8,75 × x + 1,25 × x = 20

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

X x 10=20

       X=20:10

      X=2

8,75xX+1,25xX=20

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

             10xX=20

                  X=20:10

                  X=2

đây nha e

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

=>10x=20

hay x=2

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

x x 10 = 20

x = 20 : 10

x = 2