x + 97 = 45 + 55
x + 97 = 100
x = 100 - 97
x = 3
145 - x = 78
x = 145 - 78
x = 67
Ta có : x + 97 = 45 + 55
=> x + 97 = 100
=> x = 100 - 97
=> x = 3
a)x+97=45+55
x+97=100
x =100-97
x =3
b)145-x=78
x=145-78
x=67
a)x+97=45+55
x+97 =100
x =100-97=3
b)145-x=78
x=145-78
x=67
A, X + 97 = 45 + 55 X + 97 = 100 X = 100 - 97 X = 3 B, 145 - X = 78 X = 145 -78 X = 67
a. x + 97 =100 b. x = 145 -78
x =100 - 97 x= 67
x = 3
a) x + 97 = 45 + 55
x + 97 = 100
x = 100 - 97
x = 3
b) 145 - x = 78
x = 145 - 78
x = 67
x + 97 = 45 +55 145 - x = 78 NHỚ CHO MÌNH
x + 97 = 100 x = 145 - 78
x = 100 - 97 x = 67
x = 3
a) x + 97 = 45 + 55
x + 97 = 100
x = 100 - 97
x = 3
b) 145 - x = 78
x = 145 - 78
x = 67
nha bn
a)x+97=45+55
x+97=100
x =100-97
x =3
b)145-x=78
x=145-78
x=67