a) x +/21 - 14/ = 35
x+7=35
x=35-7
x=28
Vậy x=28
b) 4,5 - x = 2,45
x=4,5-2,45
x=2,05
Vậy x=2,05
4,5 - x= 2,45
=>x= 4,5 -2,45
=>x=2,05
a) x +/21 - 14/ = 35
x+7=35
x=35-7
x=28
Vậy x=28
b) 4,5 - x = 2,45
x=4,5-2,45
x=2,05
Vậy x=2,05
a,x+/21-14/=35
x + /7/ =35
=>x + 7 = 35 hay x + (-7) = 35
x=35 - 7 x = 35 - (-7)
x=28 x =42
b,4,5 - x = 2,45
x = 4,5 - 2,45
x = 2,05