3 . ( 5x + 15 ) + x - 11 = 98
=>3(5x+15)+x=109
=>15x+45+x=109
=>16x=64
=>x=4
3 . ( 5x + 15 ) + x - 11 = 98
=>3(5x+15)+x=109
=>15x+45+x=109
=>16x=64
=>x=4
cac ban oi giup minh bai nay voi :
cho phan thuc A = \(\frac{n-5}{n+1}\)
a. tinh A khi n=10
b. tinh A khi n = 0
c. tim n de A thuoc Z
D.tim n de A la phan so toi gian
bn nao giup mk , mk cam on
tai sao trong tin nhan cua mk cu co cai nay /hoi-dap/undefined ne, cac ban giup mk giai quyet voi, no cu hien len trong ttin nhan cua nguoi khac khi minh gui tin nhan di
3 . (5x + 15)+x-11=98
cac ban giup mk nhe
x la phan so toi gian
\(x^3=-\frac{27}{343}\)
cac ban giup minh cau nay nhe
bai 1 pha ngoac roi tinh
a) - { -12 - [ 28 + ( -23 ) ] - ( - 105 ) }
b) - ( 125 - 37 ) + [ -28 - ( 31 - 105 ) ]
cac bn oi giup mk voi
b1 tim x biet
a,3x+2+3x+1+3x=117
b,32x+1=1/81
c,(x+2)4=16
Tim GTLN
a, /x - 1/ - /x - 3/
giup mk vs nha
Cho a+b+3+d khac 0 va a+b/b+3 =d+3/a+d . Tim a
cac ban giup minh voi
1) tim x thuoc Q
A)|x|=2,1
B)|x|=1 va2/5
C)|x|=17/9 va x<0
D)|x|=0,35 va x>0
2)tim x
A) |x-1,7=2,3
B)|x+3/4|-1/3=0
cac bn giup mih nha