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cac ban giup mk bai nay vs...
tim x:
x/7=x+16/35
8/x=7/x-16
tim so tu nhien x biet:7/9+16/48<x<43/8+0.125
tim x, biet
a. x + 7 = 15
b. 3 nhan - 14 = 16
bai 1 tim x biet
a)x-43+7=49-(50+3)
b)-(x-16)+70=45
bai2 tim x biet
a)2x-(-60)=3x-18
b)-45-5x=10-4x
Tim x thuoc N biet:
a, (225-x) -81=54
b, 7.(x-14)+35= 25+279:9
c, 7x : 49= 727
tim x biet : x . (x 2)= 35
tim x biet
X+35=-22-X
(6X-4^2) .7^8=2.7^9
5.3^x-1-7.3^12=8.3^12
3.(x-15)^3=-24
lx+18l=10
tim so tu nhien x biet: (x - 35) - 120 = 0
tim x biet (x-32):16=48