Tìm x, biết: x+5/48=7/42
Trả lời: x=
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\(2^{x+5}+2^{x+2}=48\)
\(\Leftrightarrow2^{x+2}\left(2^3+1\right)=48\)
\(\Leftrightarrow9\cdot2^{x+2}=48\)
\(\Leftrightarrow2^{x+2}=\frac{16}{3}\)
Đề có sai ko hả bạn
\(\frac{x+5}{48}=\frac{1}{6}\)
\(\frac{x+5}{48}=\frac{8}{48}\)
x+5=8
x=8-5
x=3
( ( x . 32 ) - 17 ) . 2 = 42
( ( x . 32 ) - 17 ) = 42 : 2
( ( x . 32 ) - 17 ) = 21
x . 32 = 21 + 17
x . 32 = 38
x = 38 : 32
x = 19/16
7/x=y/27=-42/54=-7/9
7/x=-7/9 nên x=-9
y/27=-7/9=-21/27 nên y=-21
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6 x 6 = 36 63 : 7 = 9 7 x 5 = 35 6 x 7 = 42
7 x 7 = 49 48 : 6 = 8 35 : 7 = 5 42 : 6 = 7
5 x 5 = 25 49 : 7 = 7 35 : 5 = 7 42 : 7 = 6
6 x 6 = .36.... 63 : 7 = 9..... 7 x 5 = .35...... 6 x 7 = ..42...
7 x 7 = ..42... 48 : 6 = ..8... 35 : 7 = ...5.. 42 : 6 = ..7...
5 x 5 = ...25.. 49 : 7 = .7.... 35 : 5 = ...7.. 42 : 7 = ..6...
hok tốt
x=7/42-5/48
sau đó bạn tự tìm x nhé!
x + 5/48 = 7/42
x = 7/42 - 5/48
x = 1/16