\(3+\left(x\cdot4\right)-15=1\)
\(\Leftrightarrow4x=1+15-3=13\)
\(\Leftrightarrow x=\frac{13}{4}\)
3 + (x × 4) - 15 = 1
3 + (x × 4) = 1 + 15
3 + (x × 4) = 16
(x × 4) = 16 - 3
(x × 4) = 13
x = 13 : 4
x = \(\frac{13}{4}\)3 + ( X \(\times\) 4 ) - 15 = 1
3 + ( X \(\times\) 4 ) = 1 + 15
3 + ( X \(\times\) 4 ) = 16
X \(\times\) 4 = 16 - 3
X \(\times\) 4 = 13
X = 13 : 4
X = 3,25 .
3+ (x.4) - 15=1
=>3+ (x.4)=1+15
=>3+ (x.4)=16
=>x.4=16-3
=>x.4=13
=>x=\(\frac{13}{4}\)
Vậy x=\(\frac{13}{4}\)