tìm x
8,75xX+1,25xX=20
8,75xx+1,25xx=20
8,75xX+1,25xX=20
8,75.x+1,25.x=20
(8,75+1,25).x=20
10.x=20
x=20/10
x=2
dau cham la dau nhan nha ban
8,75xX+1,25xX=20
NGUYEN LE DUC ANH:
Dấu chấm (.) là dấu nhân nha!
8,25 . X + 1,25 . X = 20
(8,25 + 1,25) . X = 20
10 . X = 20
X = 20 : 10
X = 2
Vậy x = 2
Tham khảo nha!
\(8,75.x+1,25.x=20\)
\(x.\left(8,75+1,25\right)=20\)
\(x.10=20\)
\(x=20:10=2\)
tìm x:
8,75 x X+1,25xX=20
8,75 * x + 1,25 * x = 20
x * ( 8,75 + 1,25 ) = 20
x * 10 = 20
x = 2
8.75 x X + 1.25 x X = 20
X( 8.75 + 1,25) = 20
10x= 20
x= 20 : 10
x= 10
112 - (x+4)=1339:13
468+85xX=2508
Xx2,5=2,5x4
x-270:45=120
575-(6xX+70=445
x-105:21=15
3200:(405-x)=8
43575-75xX=42450
8,75xX+1,25xX=20
112 - (x+4)=1339:13
112 - (x+4)=103
x+4= 112-103
x+4=9
x=9-4
x=5
_________
468+85xX=2508
85 x X = 2508 - 468
85 x X = 2040
X= 2040 : 85
X=24
____
Xx2,5=2,5x4
X x 2,5 = 10
X= 10:2,5
X=4
________
x-270:45=120
X - 6 = 120
X= 120+6
X=126
575-(6xX)+70=445
(6 x X) + 70 = 575 - 445
(6 x X) + 70= 130
6 x X = 130 - 70
6 x X = 60
X= 60:6
X=10
______
x-105:21=15
X - 5 = 15
X= 15+5
X=20
______
3200:(405-x)=8
405 - x = 3200 : 8
405 - x = 400
x= 405 - 400
x= 5
_______
43575-75xX=42450
75 x X = 43575 - 42450
75 x X = 1125
X= 1125:75
X= 15
______
8,75xX+1,25xX=20
(8,75 + 1,25) x X = 20
10 x X = 20
X=20:10
X=2
tim x biet 3,75+1,25xX=4.75
3,75 + 1,25*X=4*75
=>3,75+1,25*X=300
=>1,25 * X =300 - 3,75=296,25
=> X = 296,25 / 1,25 = 237
TICK NHA
1,25xX-1/4xX-3,5=\(1\dfrac{1}{2}\)