(x-280):35= 56:5=56/5
x-280=56/5.35=392
x=392+280=672
( x - 280 ) : 35 = 56 : 5
( x - 280 ) : 35 = 11.2
x - 280 = 11.2 x 35
x - 280 = 392
x = 392 + 280
x = 672
\(\left(x-280\right):35=56:5\)
\(\left(x-280\right):35=\frac{56}{5}\)
\(x-280=\frac{56}{5}\cdot35\)
\(x-280=392\)
\(x=392+280\)
\(x=672\)
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(x-280):35=11.2
x-280=11.2*35
x-280=3416
x=3416+280
x=3696
(x - 280 ) : 35 =56 : 5
(x - 280 ) :35 =11,2
x - 280 = 11,2 x 35
x - 280 = 392
x = 392 + 280
x = 672
\(\left(x-280\right):35=56:5\)
\(\left(x-280\right):35=11,2\)
\(x-280=11,2\times35\)
\(x-280=392\)
\(x=392+280\)
\(x=672\)
hok tốt