Theo đề ta có: \(\frac{25-x}{56}=\frac{6}{16}\)
Ta rút gọn: \(\frac{25-x}{56}=\frac{3}{8}\)
\(\Leftrightarrow\)25 -x . 8 = 56 . 3
\(\Rightarrow\)25 - x . 8 = 168
\(\Rightarrow\)25 - x = 168 : 8
\(\Rightarrow\)25 - x = 21
\(\Rightarrow\) - x = 21 - 25
\(\Rightarrow\) - x = -4
\(\Rightarrow\) x = 4
Vậy x = 4.
\(\frac{25-x}{56}=\frac{6}{16}\)
\(\frac{25-x}{56}=\frac{21}{56}\)
\(\frac{25-21}{56}=\frac{x}{56}=\frac{4}{56};\Rightarrow x=4\)
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mk trả lời cho
\(6.56=16.\left[25-x\right]\)
\(336=16.\left[25-x\right]\)
\(336=400-16.x\)hay \(400-16.x=336\)
\(16.x=400-336=64\)
\(x=64:16=4\)
mk đầu tiên nha bạn
56 / 16 = 3.5
3.5 * 6 = 21
Vậy 21 = 25 - 21 = 4
=> x = 4