y . 17 + y . 21 = 532
y.(17+21)=532
y.38=532
y=532:38=14
\(y\left(17+21\right)=532\)
\(y\times38=532\)
\(y=532:38\)
\(y=14\)
y.(17+21)=532
y.38=532
y=532:38
y=14
Vậy y=14
Chúc bạn học tốt ^^
y . 17 + y . 21 = 532
y.(17 + 21) = 532
y.38 = 532
y = 14
` y.17 + y.21 = 532 => y(17+21) = 532 <=> 38y =532 <=> y = 532: 38 <=> y = 14 `