y x 5= 100+ 60
y x 5 = 160
y= 160 :5
y =32 ai tk mk mk mk lai
y x 5= 100+ 60
y x 5 = 160
y= 160 :5
y =32 ai tk mk mk mk lai
3234-y x5 =1859.Tìm y
20 × 20
40 × 40
60 × 60
80 × 80
100 × 100
20 × 20
40 × 40
60 × 60
80 × 80
100 × 100
x + 60 = 100 + 100
Tính giá trị của biểu thức:
a) 90 – ( 30 – 20) = ..........................
= ..........................
90 – 30 – 20 = ..........................
= ..........................
b) 100 – (60 + 10) = ..........................
= ..........................
100 - 60 + 10 = ..........................
= ..........................
c) 135 – (30 + 5) = ..........................
= ..........................
135 – 30 – 5 = ..........................
= ..........................
d) 70 + (40 – 10) = ..........................
= ..........................
70 + 40 – 10 = ..........................
= ..........................
Tính:
a, 100/2+56
b, 100+60/3
c, 100*5-56
Tìm x
a) x + 100 = 50 + 60
b) x + 50 = 30 + 60
x + 60 = 100 + 200