Toán Lớp 6: B1:Tìm X
a)x+5=-30
b)123+5(x-4)=38
c)2x-(21.3.150-150.61)=-11.26
Leave a reply
Register Now
Login
Lost Password
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Toán Lớp 6: B1:Tìm X
a)x+5=-30
b)123+5(x-4)=38
c)2x-(21.3.150-150.61)=-11.26
Comments ( 2 )
a)x + 5=-30
x=-30-5
x=-35
_____________________________________________
b)123 + 5(x-4)=38
5(x-4)=38-123
5(x-4);=-85
x-4=-85 : 5
x-4=-17
x=-17 + 4
x=-13
_________________________________________
c)2x-(21.3.150-150.61)=-11.26
2x-(9450-9150)=-286
2x-300=-286
2x=-286+300
2x=14
x=14 : 2
x=7
______________________________-
#worl_
B1:Tìm X
a)x+5=-30
b)123+5(x-4)=38
c)2x-(21.3.150-150.61)=-11.26
giải:
a)x+5=-30
x =-30-5
x =-35
b)123+5(x-4)=38
5(x-4) = 123 – 38
5(x – 4) = 85
x – 4 = 85 : 5
x – 4 = 17
x = 4-17
x = -13
c)2x-(21.3.150-150.61)=-11.26
2x- (9450-9150)= -286
2x = -286 + 300
2x = 14
x = 14 : 2
x = 7