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

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

\(10\times x=20\)

              \(x=20:10\)

              \(x=2\)

Vậy \(x=2\)

Cjhucs bạn học tốt !!!

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

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

X x 10                     = 20

X                             = 20 : 10

X                             = 2                    Vậy X= 2

 Ta có 8,75 x X + 1,25 x X = 20

⇒(8,75+1,25)×X=20

⇒10×X=20

⇒X=20÷10

⇒X=2

Vậy X=2

\(8.75\times x+1.25\times x=20\)

\(x\times\left(8.75+1.25\right)=20\)

\(10\times x=20\)

\(x=20:10=2\)

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 

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

=10* x =20

        x=20:10 

        x = 2

8.75 * x + 1.25 * x = 20]

( 8.75 + 1.25 ) * x = 20

10 * x = 20

x = 20 : 10

x = 2

Dấu \(.\)là dấu nhân 

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

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

\(\Rightarrow10.x=20\)

\(\Rightarrow x=20:10\)

\(\Rightarrow x=2\)

Vậy \(x=2\)

x.(8,75+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

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

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

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

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

\(x=-2.6\)

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