Toán Lớp 6: A/ x – 21 = 254
B/ 3x + 25 = 85
C/ 2x – 17 = 13
D/ (3x + 15) – 22 = 14
E/ 2x – 5 = 17
F/ 23.x + 54 = 192
G/ 58 + x = 72
H/ x + 3 = 15
Giúp em bài này vớiiiiiiiiiiiiiiii
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: A/ x – 21 = 254
B/ 3x + 25 = 85
C/ 2x – 17 = 13
D/ (3x + 15) – 22 = 14
E/ 2x – 5 = 17
F/ 23.x + 54 = 192
G/ 58 + x = 72
H/ x + 3 = 15
Giúp em bài này vớiiiiiiiiiiiiiiii
Comments ( 2 )
a, x-21=254
(=)x=275
b,3x+25=85
(=)3x=60
(=)x=20
c,2x-17=13
(=)2x=30
(=)x=15
d,(3x+15)-22=14
(=)3x+15=36
(=)3x=21
(=)x=7
e,2x-5=17
(=)2x=22
(=)x=11
f,23x+54=192
(=)23x=138
(=)x=6
g,58+x=72
(=)x=14
h,x+3=15
(=)x=12
#Xin CTLHN #BN #Hoidap247
a. x – 21 = 254
x = 254+21
x = 275
B. 3x + 25 = 85
3X = 85 – 25 = 60
x = 60 / 3 = 20
C. 2x -17 = 13
2X = 13+17 = 30
X = 30 / 2 = 15
D. ( 3x+ 15 ) -22 = 14
3x +15 = 14 + 22 = 36
3x = 36-15 = 21
X = 21 / 3 = 7
e. 2x – 5 = 17
2X = 17 + 5 = 22
X = 22 / 2 = 11
f. 23X + 54 = 192
23X = 192 – 54 = 138
X = 138 / 23 = 6
g . 58 + x = 72
X = 72 – 58 = 14
H. X+3=15
X = 15-3 = 12
Chúc bạn hok tốt