\(5\times3=27-x\) \(\Leftrightarrow15=27-x\) \(\Leftrightarrow x=27-15\) \(\Leftrightarrow x=12\)
a) 5 x 3 = 27 - x
=> 15 = 27 - x
=> x = 27 - 15
=> x = 12
Vậy x = 12 .
\(5.3=27-x\)
\(15=27-x\)
\(x=27-15\)
\(x=12\)
vay \(x=12\)
tim x biet;5x + 3=27-x
tim x biet : 4x-3=5x+7
Tim x biet:|x2 -5x +4| = 5x-x-4
Tim x biet:
a,[3x-4]=x
b,[x+8]=-3.x
c,[5x-3] = 2x+1
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 so nguyen x biet :
4 - (27-3) = x - (13-4).
Tim so tu nhien x, biet:
3 mu 2=27
x mu 3=9x
tim cac gia tri nguyen cua x de y nhan gia tri nguyen,biet :y=5x+9/x+3
tim x thuoc z , biet : 2x-3/3 + -3x +4/4+5x-12/5 = 241/60
