x * 101 - x = 72000
x * 101 - x * 1 = 72000
x * ( 101 - 1 ) = 72000
x * 100 = 72000
x = 72000 : 100
x = 720
x * 101 - x = 72000
x * 101 - x * 1 = 72000
x * ( 101 - 1 ) = 72000
x * 100 = 72000
x = 72000 : 100
x = 720
Tính nhẩm
a) 50000 + 40000 = .......................
90000 - 20000 = .......................
b) 42000 + 6000 = .......................
86000 - 2000 = .......................
c) 40000 x 2 = .......................
80000 : 4 = .......................
d) 12000 x 3 = 3.......................
72000 : 8 = .......................
Tìm x:
a) X : 8 = 101
....................
....................
b) X : 5 = 117
....................
....................
c) X : 3 = 282
....................
....................
TIM x
101+x*7-6= 101+2*x ( dau * la nhan)
1) Tính nhanh:
a, 125 x 3 + 125 x 125 x 6
b, ( 245 x 99 + 245 ) - ( 145 x 101 - 145 )
c, 154 x ( 28 + 52 ) - 45 x ( 26 + 54 )
Tìm x:
x: 7 = 101
Tìm x:
x : 7 = 101
[ 234 x 99 + 234 ] - [34 x 101 - 34 ]
tim x biết
x+101=102
Tìm x
x - 99 = 101
x + 10 = 100
Ai like mik thì mik like lại cho