#)Giải :
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
#~Will~be~Pens~#
\(8,75.x+1,25.x=20\)
\(\Rightarrow x.\left(8,75+1,25\right)=20\)
\(\Rightarrow x.10=20\)
\(\Rightarrow x=20:10\)
\(\Rightarrow x=2\)
Vậy x = 2
~Study well~
#ARMY_BLINK#
\(8,75\times x+1,25\times x=20\)
\(\left(8,75+1,25\right)\times x=20\)
\(10\times x=20\)
\(x=20\div10\)
\(x=2\)
Vậy \(x=2\)
8,75*x+1,25*x=20
=> x*(8,75+1,25)=20
=> x*10=20
=> x=20:10
=> x=2
Vậy x = 2
~Hok tốt nhé~
8,75*x + 1,25*x = 20
x*(8,75+1,25)=20
x*10=20
x=20:10
x=2
~ Học tốt ~