a) \(y\times27+y\times30+y\times43=210500\)
\(y\times\left(27+30+43\right)=210500\)
\(y\times100=210500\)
\(y=210500\div100\)
\(y=2105\)
b) \(15\times y+85\times y=300\)
\(y\times\left(15+85\right)=300\)
\(y\times100=300\)
\(y=300\div100\)
\(y=3\)
\(a,y\times27+y\times30+y\times43=210500\)
\(\Rightarrow y\times\left(27+30+43\right)=210500\)
\(\Rightarrow y\times100=210500\)
\(\Rightarrow y=210500:100=2105\)
\(b,15\times y+85\times y=300\)
\(\Rightarrow y\times\left(15+85\right)=300\)
\(\Rightarrow y\times100=300\)
\(\Rightarrow y=300:100=3\)
a) y x 27 + y x 30 + y x 43 = 210500
y x ( 27+30+43 ) = 210500
y x 100 = 210500
y = 210500 : 100
y = 2150
b) 15 x y + 85 x y = 300
y x ( 15+85)=300
y x 100 =300
y = 300 : 100
y = 3
a) y x 27 + y x 30 + y x 43 = 210500
\(yx\left(27+30+43\right)=210500\)
\(yx100=210500\)
\(y=210500:100\)
\(y=2105\)
b) 15 x y + 85 x y = 300
\(\left(15+85\right)xy=300\)
\(100xy=300\)
\(y=300:100\)
\(y=3\)
.................
\(x=\)NHÂN
a) y x 27 + y x 30 + y x 43 = 210500
Y x (27 + 30 +43) = 210500
Y x 100 = 210500
Y = 210500 : 100=2105
b) 15 x y + 85 x y = 300
Y x (15+85)=300
Y x 100 = 300
Y = 300:100 =3
A. y nhân[27+30+43] = 210500
y nhân 100 = 210500
y =210500:100
y =2105
B.y nhân [ 15 +85] = 300
y nhân 100 =300
y = 300 :100
y = 3
