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

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

x x 10 = 20

x = 20 : 10

x = 2

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

10*x=20

x=20 : 10 

x=2

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

10 + x = 20

x = 20 - 10

x = 10

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

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

x x 10 = 20

x = 20 : 10

x = 2

x=2

 (8,75 + 1,25) x X = 20

 10 x X = 20

=> X = 2

8,75 x X + 1,25 x 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

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

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

10 x x = 20

x = 20 : 10

x = 2

5 *x + 3,75 *x + 1,25 *x= 20     

<=>x* (5+3,75+1,25) =20

<=>x* 10 =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

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

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

\(x\times-7,5=20\)

\(x=20\div\left(-7,5\right)\)

\(x=-2.6\)

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

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