8,75 x X + 0,25 x X + X = 20
tìm X
8,75 x X + 0.75 +1,25 x X + 0,25 = 20 + 1/4 + 0,75
8,75 x X + 0,75 + 1,25 x X + 0,25 = 20 + 0,25 + 0,75
8,75 x X + 0,75 + 1,25 x X + 0,25 = 20 + 1
8,75 x X + 0,75 + 1,25 x X + 0,25 = 21
( 8,75 + 1,25 ) x X + ( 0,75 + 0,25) = 21
10 x X + 1 = 21
10 x X = 21 - 1
10 x X = 20
X = 20 : 10
X = 2
tk nha
8,75x X+0,75+1,25x X +0,25=20+1/4+0,75
8,75x X +0,75+1,25x X +0,25=21
(8,75+0,25)xX+0,75=21
9xX+0,75=21
9xX=21-0,75
9xX=20,25
X=20,25:9
X=2,25
mk nhanh nhất tk nha
8,75 x X + 0.75 +1,25 x X + 0,25 = 20 + 1/4 + 0,75
=> 8,75x + 0,75 + 1,25x + 0,25 = 20 + 1/4 + 0,75
=> 8,75x + 1,25x = 20
=> 10x = 20
=> x = 2
Vậy x là 2
8,75 x X + 1,25 x X = 20
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
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
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 x x +1,25 x x = 20
( 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
Tìm x: 8,75 x x + 1,25 x x = 20
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
Tìm x: 8,75 x x + 1,25 x x = 20
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
Tìm x, biết:
8,75 x x + 1,25 x x = 20
8,75 x X + 1,25 x X = 20
8,75 x X + 1,25 x X = 20
\(8,75\cdot x+1,25\cdot x=20\)
\(\left(8,75+1,25\right)\cdot x=20\)
\(10\cdot x=20\Rightarrow x=2\)
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
k cho mk nha