7x - 2x = 617 : 615 + 44 : 11
7x - 2x = 62 + 4
7x - 2x = 40
5x = 40
x = 8
7x-2x=6^17:6^15+44:11
5x=6^17-15+4
5x=6^2+4
5x=36+4
5x=40
x=8
chúc bn hok tốt
\(7x-2x=6^{17}:6^{15}+44:11\)
\(5x=6^2+4\)
\(5x=36+4\)
\(5x=40\)
\(x=40:5\)
\(x=8\)
Vậy \(x=8\).
\(7x-2x=6^{17}:6^{15}+44:11\)
\(\Leftrightarrow5x=6^{17-15}+4\)
\(\Leftrightarrow5x=6^2+4\)
\(\Leftrightarrow5x=36+4\)
\(\Leftrightarrow5x=40\)
\(\Leftrightarrow x=40:5=8\)
Vậy \(x=8\)
Chúc bạn học tốt!!!